taxonID	type	description	language	source
75515123FFC92B25FF1FC9E28F5CB36E.taxon	type_taxon	Type species: Diochus nanus Erichson, 1839: 300, fixed by monotypy.	en	Huang, Tian, Zhou, Yu-Lingzi, Janák, Jiří, Zhou, Hong-Zhang (2024): Four new species and a key to Australian species of the genus Diochus Erichson (Coleoptera: Staphylinidae, Staphylininae, Diochini). Zootaxa 5512 (3): 343-372, DOI: 10.11646/zootaxa.5512.3.2, URL: http://dx.doi.org/10.11646/zootaxa.5512.3.2
75515123FFC92B25FF1FC9E28F5CB36E.taxon	diagnosis	Diagnosis. Body slender (Fig 1), narrowed anteriorly and posteriorly, usually small to medium-sized (3 − 6 mm). Head small, with two paired punctures arranged in a square on the disc, a median elevation between the eyes only present in males, sometimes underdeveloped or absent. Neck cylindrical, thin, about 1 / 3 width of head, both the dorsal and ventral surface with a ridge or a groove. Pronotum oval shaped, usually with five paired punctures on surface. Elytra not overlapping at suture; each elytron usually with a row of five punctures along suture, a row of five punctures in median. Protarsi moderately dilated. Antesternal plate rudimentaly and weakly sclerotized. Prosternum with distinct intercoxal process and transverse ridge. Mesoventrites with obvious longitudinal ridge, transverse ridge, and oblique furrow. Discrimen of metaventrites distinctly elevated. Aedeagus usually sclerotized, with symmetrical parameres; the structures of aedeagus and the shapes of parameres are usually specific for species. Female spermatheca (Fig 2 - 2 I; Fig 3 - 2 I; Fig 4 - 2 I; Fig 5 - 2 I; Fig 6 - 2 C-D; Fig 9 - 3 I) divided into an outer capsule and a sclerotized tube; the length and the shape of the tube can be different among species. Sternite and tergite VIII broad; posterior margins of male sternite VIII usually specific for species. Tergite IX symmetrical, connected mediobasally, narrowed apically. Sternite IX small, usually asymmetrical in male, but symmetrical in female. Tergite X distinctly broad. Sternite X in female slender and rhomboidal, with numerous setae in lower half, but absent in male. The diagnosis follows Zhou & Zhou (2016).	en	Huang, Tian, Zhou, Yu-Lingzi, Janák, Jiří, Zhou, Hong-Zhang (2024): Four new species and a key to Australian species of the genus Diochus Erichson (Coleoptera: Staphylinidae, Staphylininae, Diochini). Zootaxa 5512 (3): 343-372, DOI: 10.11646/zootaxa.5512.3.2, URL: http://dx.doi.org/10.11646/zootaxa.5512.3.2
75515123FFC82B22FF1FCDF38898B25E.taxon	description	(Figs 2 - 1; 2 - 2)	en	Huang, Tian, Zhou, Yu-Lingzi, Janák, Jiří, Zhou, Hong-Zhang (2024): Four new species and a key to Australian species of the genus Diochus Erichson (Coleoptera: Staphylinidae, Staphylininae, Diochini). Zootaxa 5512 (3): 343-372, DOI: 10.11646/zootaxa.5512.3.2, URL: http://dx.doi.org/10.11646/zootaxa.5512.3.2
75515123FFC82B22FF1FCDF38898B25E.taxon	materials_examined	Type locality. Australia: Queensland: Laidley, dry river. Type material. Holotype: male, Australia: Queensland: Laidley, dry river, 16. III. 1983, litter, Y. Basset collected (MHNG). Paratypes: Australia: Queensland: 1 male, with same data as holotype (MHNG); 1 female, Highdale nr Samford, 30. VIII. 1987, open for. Eucalyptus, Y. Basset collected (MHNG).	en	Huang, Tian, Zhou, Yu-Lingzi, Janák, Jiří, Zhou, Hong-Zhang (2024): Four new species and a key to Australian species of the genus Diochus Erichson (Coleoptera: Staphylinidae, Staphylininae, Diochini). Zootaxa 5512 (3): 343-372, DOI: 10.11646/zootaxa.5512.3.2, URL: http://dx.doi.org/10.11646/zootaxa.5512.3.2
75515123FFC82B22FF1FCDF38898B25E.taxon	description	Measurements. BL = 5.82 mm, FL = 2.51 mm, HL = 0.70 mm, HW = 0.53 mm, EL = 0.16 mm, TL = 0.42 mm, ANL = 1.41 mm, ANT 1 = 0.22 mm, ANT 2 = 0.14 mm, ANT 3 = 0.16 mm, ANT 4 = 0.12 mm, ANT 11 = 0.15 mm, PL = 0.89 mm, PW = 0.72 mm, EL = 0.87 mm, EW = 1.04 mm, SL = 0.67 mm. Description. Body (Fig 2 - 1 A) long, narrowed anteriorly and posteriorly, large-sized. Body yellow to dark brown, pronotum yellow, abdominal intersegmental membrane lighter. Legs yellowish brown, tarsi distinctly lighter. Antennae yellowish brown, apex of each antennomere lighter. Maxillary and labial palpi brown. Head (Fig 2 - 1 A). Oblong in shape, 1.35 times as long as wide. Tempora straight and parallel, posterior angles rounded. Dorsal surface shiny, bearing distinct transverse microstriae, also with coarse and sparse punctures. Head with 5 − 7 irregular punctures scattered around each eye and numerous smaller punctures on deflexed portion of tempus and near posterior margin. Each side of cranium with characteristic punctures: one frontal puncture on frontal region, two anterolateral punctures near antennal insertion, three lateral punctures near dorsal margin of eye, with temporal puncture and occipital puncture near basal margin; disc surface bearing two additional paired punctures in middle area. Frontal furrows and anteocular furrows absent. Eye large-sized, distinctly protruding laterad, longitudinal diameter about half of length of tempora (eye: tempora = 0.39). Epistoma not flattened, abruptly oblique, anterior margin slightly emarginate medially. Distance between antennal insertions (0.16 mm) distinctly longer than distance from antenna to eye (0.08 mm). Ventral surface with scattered punctures, interspaces between them about 4 puncture diameters. Gular sutures deep, confluent at basal 1 / 4, then extended to base. Antennae (Fig 2 - 1 B). Scape rod-shaped, slightly thickened apically, shorter than two subsequent antennomeres combined; antennomere 2 slightly elongate,; antennomere 3 distinctly longer than 2; antennomere 4 about 1.5 times of the width, antennomeres 4 to 10 gradually shortened, antennomere 4 longer than 10; antennomere 11 distinctly longer than 10. Mouthparts. Labrum nearly hexagonal, lateral margin straight, widest at basal 1 / 3 to 1 / 2; width of anterior margin about half width at widest point. Mandibles (Figs 2 - 1 D) falciform, left one with three small teeth on inner margin, whereas right one with two. Neck. Cylindrical, shiny, only bearing shallow microsculpture, width 0.17 mm, shorter than 1 / 3 of head width. Dorsal surface with distinct groove; ventral surface with gular sutures forming triangular region, with deep transverse median furrow. Prothorax (Fig 2 - 1 A). Pronotum elongate (PL to PW ratio 1.23), distinctly longer and wider than head. Anterior region near anterior angles deflexed, lateral margins widened posteriad to basal 1 / 4 (widest at 1 / 4), then convergent backwards, anterior and posterior angles broadly rounded. Dorsal surface glossy, extensively with micropunctures, but without any microsculpture. Each side of longitudinal midline with one row of punctures composing of 3 large punctures and 2 additional punctures outside of puncture row, 13 – 15 punctures scatted near each margin (including anterior, lateral and posterior margins). Prosternum bearing transverse ridge between basisternum and furcasternum, angularly backwards. Pterothorax (Fig 2 - 1 A). Mesoscutellum triangular and small, surface shiny, bearing distinct microstriae, but without any punctures. Transverse ridge on mesoventrite wave shaped; paired oblique furrows short but deep; carina limiting mesocoxal cavity slightly arcuate. Discrimen region on metaventrite normally elevated. Elytra (Fig 2 - 1 A). Elytra yellow, transverse and short (EL to EW ratio 0.78), distinctly longer and wider than pronotum. Humeri well developed, lateral margins divergent posteriorly, posterior margin not rounded, but obliquely truncate. Dorsal surface shiny, flattened, without microsculpture; each elytron with row of 5 punctures along suture, row of 5 punctures on disc, also with 4 − 5 rows of punctures on deflexed portion. Legs (Fig 2 - 1 C). First four segments of protarsi heart-shaped, moderately dilated, and those of meso- and metatarsi slender. Last segment of protarsi slightly shorter than 2 − 4 together, that of meso-, meta- shorter than length of each 2 − 3. Abdomen (Fig 2 - 1 A). Broadest at segment V. Tergites III – VII covered with dense and transverse microstriae; each tergite with dense yellow pubescence, also with row of darker and coarser setae at posterior margin of tergites III – VI. Tergites III – VII with basal impression near anterior margin, respectively, each one only possessing one basal transverse carina; all abdominal tergites with surface shiny, bearing polygonal reticulum, with dense punctures. Posterior margin of tergite VII with distinct palisade fringe. All abdominal sternites shiny, with microstriae and punctures as those on tergites. Male (Figs 2 - 1 E – J; 2 - 2 A – E). Head with small round elevation between eyes. Posterior margin of sternite VIII emarginate medially, emargination wide and shallow, each side with another shallower emargination (Figs 2 - 1 E; 2 - 2 B). Posterior margin of tergite VIII arcuate (Figs 2 - 1 F; 2 - 2 C). Tergite IX (Figs 2 - 1 G; 2 - 2 D) symmetrical, connected mediobasally, narrowed apically. Sternite IX (Figs 2 - 1 H; 2 - 2 E) symmetrical, widest near basal 1 / 3 to 1 / 2; basal margin straight, apical margin normally emarginated; width of apical margin slightly shorter than of basal margin. Tergite X (Figs 2 - 1 G; 2 - 2 D) symmetrical, triangular. Aedeagus (Figs 2 - 1 I – J; 2 - 2 A) symmetrical, medium-sized, ca. 0.59 mm long, normally sclerotized. Parameres symmetrical, thick and short, about 1 / 6 length of median lobe. Internal structures sclerotized, composed of five parts: U-shaped sclerite apically, symmetrical, brown color; paired strip shaped sclerites located on both sides, brown color; 3 sclerites in middle: paired oval sclerites in brown color, one irregular shaped sclerite in brown to black color. Sperm pump coiled, thinned toward apex. Female (Figs 2 - 2 F – I). Head without elevation between eyes. Sternite VIII (Fig 2 - 2 F) with posterior margin rounded. Tergite IX bearing numerous setae, elongate and sharply pointed apically. Sternite IX (Fig 2 - 2 H) almost symmetrical, with deep concave margin in middle. Tergite X broad, basal margin curved. Sternite X (Fig 2 - 2 G) slender and rhomboidal, with numerous setae in lower half. Tube of spermatheca sclerotized, very long and strongly coiled (Fig 2 - 2 I).	en	Huang, Tian, Zhou, Yu-Lingzi, Janák, Jiří, Zhou, Hong-Zhang (2024): Four new species and a key to Australian species of the genus Diochus Erichson (Coleoptera: Staphylinidae, Staphylininae, Diochini). Zootaxa 5512 (3): 343-372, DOI: 10.11646/zootaxa.5512.3.2, URL: http://dx.doi.org/10.11646/zootaxa.5512.3.2
75515123FFC82B22FF1FCDF38898B25E.taxon	distribution	Distribution. Queensland.	en	Huang, Tian, Zhou, Yu-Lingzi, Janák, Jiří, Zhou, Hong-Zhang (2024): Four new species and a key to Australian species of the genus Diochus Erichson (Coleoptera: Staphylinidae, Staphylininae, Diochini). Zootaxa 5512 (3): 343-372, DOI: 10.11646/zootaxa.5512.3.2, URL: http://dx.doi.org/10.11646/zootaxa.5512.3.2
75515123FFC82B22FF1FCDF38898B25E.taxon	diagnosis	Diagnosis. The species can be easily distinguished from others by its large body size and the yellow color of its pronotum and elytra (Fig 2 - 1).	en	Huang, Tian, Zhou, Yu-Lingzi, Janák, Jiří, Zhou, Hong-Zhang (2024): Four new species and a key to Australian species of the genus Diochus Erichson (Coleoptera: Staphylinidae, Staphylininae, Diochini). Zootaxa 5512 (3): 343-372, DOI: 10.11646/zootaxa.5512.3.2, URL: http://dx.doi.org/10.11646/zootaxa.5512.3.2
75515123FFC82B22FF1FCDF38898B25E.taxon	etymology	Etymology. The species epithet is dedicated to the collector of the type material, Mr. Y. Basset (Switzerland).	en	Huang, Tian, Zhou, Yu-Lingzi, Janák, Jiří, Zhou, Hong-Zhang (2024): Four new species and a key to Australian species of the genus Diochus Erichson (Coleoptera: Staphylinidae, Staphylininae, Diochini). Zootaxa 5512 (3): 343-372, DOI: 10.11646/zootaxa.5512.3.2, URL: http://dx.doi.org/10.11646/zootaxa.5512.3.2
75515123FFCC2B2DFF1FC8C3884BB796.taxon	description	(Figs 3 - 1; 3 - 2)	en	Huang, Tian, Zhou, Yu-Lingzi, Janák, Jiří, Zhou, Hong-Zhang (2024): Four new species and a key to Australian species of the genus Diochus Erichson (Coleoptera: Staphylinidae, Staphylininae, Diochini). Zootaxa 5512 (3): 343-372, DOI: 10.11646/zootaxa.5512.3.2, URL: http://dx.doi.org/10.11646/zootaxa.5512.3.2
75515123FFCC2B2DFF1FC8C3884BB796.taxon	materials_examined	Type locality. Australia: Queensland: 2 km NE by E of Mt. Tozer. Type material. Holotype: male, AUSTRALIA: Queensland: (12.44 S 143.13 E) 2 km NE by E of Mt. Tozer, 1. VII. 1986, T. Weir & A. Calder (ANIC). Paratypes: AUSTRALIA: Queensland: 1 male, with same data as holotype; 1 male, (12.44 S 143.14 E) 3 km ENE of Mt. Tozer, 28. VI to 4. VII. 1986, T. Weir & A. Calder (ANIC); 1 female, (12.44 S 143.13 E) 2 km NNE of Mt. Tozer, 3. VII. 1986, T. Weir & A. Calder (ANIC); 2 females, (12.43 S 143.17 E) 9 km ENE of Mt. Tozer, 5 − 10. VII. 1986, T. Weir & A. Calder, collected at light (ANIC).	en	Huang, Tian, Zhou, Yu-Lingzi, Janák, Jiří, Zhou, Hong-Zhang (2024): Four new species and a key to Australian species of the genus Diochus Erichson (Coleoptera: Staphylinidae, Staphylininae, Diochini). Zootaxa 5512 (3): 343-372, DOI: 10.11646/zootaxa.5512.3.2, URL: http://dx.doi.org/10.11646/zootaxa.5512.3.2
75515123FFCC2B2DFF1FC8C3884BB796.taxon	description	Measurements. BL = 4.90 mm, FL = 2.29 mm, HL = 0.62 mm, HW = 0.48 mm, EL = 0.17 mm, TL = 0.34 mm, ANL = 1.29 mm, ANT 1 = 0.16 mm, ANT 2 = 0.12 mm, ANT 3 = 0.14 mm, ANT 4 = 0.11 mm, ANT 11 = 0.16 mm, PL = 0.86 mm, PW = 0.66 mm, EL = 0.83 mm, EW = 0.93 mm, SL = 0.59 mm. Description. Body (Fig 3 - 1 A) long, narrowed anteriorly and posteriorly, medium to large-sized. Body dark brown to black brown, abdominal intersegmental membrane lighter. Legs yellowish brown, tarsi distinctly lighter. Antennomeres 1 − 6 brown, 7 − 11 light brown, apex of each antennomere lighter, 6 − 11 gradually lightened. Maxillary and labial palpi brown. Head (Fig 3 - 1 A). Oblong in shape, 1.29 times as long as wide. Tempora straight and parallel, posterior angles rounded. Dorsal surface shiny, bearing distinct and transverse microstriae, also with coarse and sparse punctures. Head with 5 − 7 irregular, punctures scattered around each eye and numerous smaller punctures on deflexed portion of tempus and near posterior margin. Each side of cranium with characteristic punctures: one frontal puncture on frontal region, two anterolateral punctures near antennal insertion, three lateral punctures near dorsal margin of eye, with temporal puncture and occipital puncture near basal margin; disc surface bearing two additional paired punctures in middle area. Frontal furrows and anteocular furrows absent. Eye medium-sized, distinctly protruding laterad, longitudinal diameter about half of length of tempora (eye: tempora = 0.50). Epistoma not flattened, abruptly oblique, anterior margin slightly emarginate medially. Distance between antennal insertions (0.12 mm) distinctly longer than distance from antenna to eye (0.07 mm). Ventral surface with scattered punctures, interspaces between them about 4 puncture diameters. Gular sutures deep, confluent at basal 1 / 5, then extended to base. Antennae (Fig 3 - 1 B). Scape rod-shaped, slightly thickened apically, shorter than two subsequent antennomeres combined; antennomere 2 slightly elongate; 3 distinctly longer than 2; 4 about twice the width, 4 to 10 gradually shortened, 4 observably longer than 10; 11 distinctly longer than 10. Mouthparts. Labrum transverse, lateral margin almost parallel, widest at basal half; width of anterior margin about half the width at widest point. Mandibles (Fig 3 - 1 D) falciform, left one with three small teeth on inner margin, whereas right one with two. Neck. Cylindrical, shiny, only bearing shallow microsculpture, width 0.13 mm, shorter than 1 / 3 of head width. Dorsal surface with distinct groove; ventral surface with gular sutures forming obvious triangular region, with deep transverse median furrow. Prothorax (Fig 3 - 1 A). Pronotum elongate (PL to PW ratio 1.30), distinctly longer and wider than head. Anterior region near anterior angles deflexed, lateral margins widened posteriad to basal 1 / 4 (widest at 1 / 4), then convergent backwards, anterior and posterior angles broadly rounded. Dorsal surface glossy, extensively with micropunctures, but without any microsculpture. Each side of longitudinal midline with one row of punctures composing of 3 large punctures and 2 additional punctures outside of puncture row, 13 – 15 punctures scatted near each margin (including anterior, lateral and posterior margins). Prosternum bearing transverse ridge between basisternum and furcasternum, angularly backwards. Pterothorax (Fig 3 - 1 A). Mesoscutellum triangular and small, surface shiny, bearing distinct microstriae, but without any punctures. Transverse ridge on mesoventrite wave shaped; paired oblique furrows short but deep; carina limiting mesocoxal cavity slightly arcuate. Discrimen region on metaventrite normally elevated. Elytra (Fig 3 - 1 A). Transverse and short (EL to EW ratio 0.90), distinctly longer and wider than pronotum. Humeri well developed, lateral margins divergent posteriorly, hind margin not rounded, but obliquely truncate. Dorsal surface shiny, flattened, without microsculpture; each elytron with row of 5 punctures along suture, row of 5 punctures in median, also with 4 − 5 rows of punctures on deflexed portion. Legs (Fig 3 - 1 C). First four segments of protarsi heart-shaped, moderately dilated, and those of meso- and metatarsi slender. Last segment of protarsi slightly longer than 2 − 4 together, that of meso-, meta- slightly shorter than length of each 2 − 3. Abdomen (Fig 3 - 1 A). Broadest at segment V. Tergites III – VII covered with dense and well-developed transverse microstriae; each tergite with dense yellow pubescence, also with row of darker and coarser setae at posterior margin of tergites III – VI. Tergites III – VII with basal impression near anterior margin, respectively, each one only possessing one basal transverse carina; all abdominal tergites with surface shiny, bearing polygonal reticulum, with dense punctures. Posterior margin of tergite VII with distinct palisade fringe. All abdominal sternites shiny, with microstriae and punctures as those on tergites. Male (Figs 3 - 1 E – J; 3 - 2 A – E). Head with small round elevation between eyes. Posterior margin of sternite VIII rounded at both sides, emarginate medially, emargination wide and shallow (Figs 3 - 1 E; 3 - 2 B). Posterior margin of tergite VIII arcuate (Figs 3 - 1 F; 3 - 2 C). Tergite IX (Figs 3 - 1 G; 3 - 2 D) symmetrical, connected mediobasally, narrowed apically. Sternite IX (Figs 2 - 1 H; 2 - 2 E) asymmetrical, widest near basal 1 / 3 to 1 / 2; basal margin straight, apical margin normally emarginated; width of apical margin about twice the width of basal margin. Tergite X (Figs 3 - 1 G; 3 - 2 D) symmetrical, triangular. Aedeagus (Figs 3 - 1 I – J; 3 - 2 A) symmetrical, medium-sized, ca. 0.63 mm long, normally sclerotized. Parameres symmetrical, thick and short, about 1 / 7 length of median lobe. Internal structures sclerotized, composed of five parts: two paired strips shaped sclerites located on both sides, parallel, lateral one in black color and the other in brown color; 3 sclerites in middle: pair rectangular sclerites in brown color, one Yshaped sclerite in brown to black color. Sperm pump coiled, thinned toward apex. Female (Figs 3 - 2 F – I). Head without elevation between eyes. Sternite VIII (Fig 3 - 2 F) with posterior margin rounded. Tergite IX bearing numerous setae, elongate and sharply pointed apically. Sternite IX (Fig 3 - 2 H) symmetrical, with deep concaved margin in middle. Tergite X broad, basal margin curved. Sternite X (Fig 3 - 2 G) slender and rhomboidal, with numerous setae in lower half. Tube of spermatheca long and sclerotized, with several bends (Fig 3 - 2 I).	en	Huang, Tian, Zhou, Yu-Lingzi, Janák, Jiří, Zhou, Hong-Zhang (2024): Four new species and a key to Australian species of the genus Diochus Erichson (Coleoptera: Staphylinidae, Staphylininae, Diochini). Zootaxa 5512 (3): 343-372, DOI: 10.11646/zootaxa.5512.3.2, URL: http://dx.doi.org/10.11646/zootaxa.5512.3.2
75515123FFCC2B2DFF1FC8C3884BB796.taxon	distribution	Distribution. Queensland.	en	Huang, Tian, Zhou, Yu-Lingzi, Janák, Jiří, Zhou, Hong-Zhang (2024): Four new species and a key to Australian species of the genus Diochus Erichson (Coleoptera: Staphylinidae, Staphylininae, Diochini). Zootaxa 5512 (3): 343-372, DOI: 10.11646/zootaxa.5512.3.2, URL: http://dx.doi.org/10.11646/zootaxa.5512.3.2
75515123FFCC2B2DFF1FC8C3884BB796.taxon	diagnosis	Diagnosis. This species is similar to D. lawrencei sp. nov. in size and coloration, but unlike D. lawrencei sp. nov., it does not have a sharp corner on each side of male sternite VIII (Fig 4 - 1 E). While the antennomeres are similarly shaped in D. pubiventris, D. weiri lacks the pale apex of the elytra and the middle extension of the male sternite VIII (Fig 9 - 1 C; Fig 9 - 2 E).	en	Huang, Tian, Zhou, Yu-Lingzi, Janák, Jiří, Zhou, Hong-Zhang (2024): Four new species and a key to Australian species of the genus Diochus Erichson (Coleoptera: Staphylinidae, Staphylininae, Diochini). Zootaxa 5512 (3): 343-372, DOI: 10.11646/zootaxa.5512.3.2, URL: http://dx.doi.org/10.11646/zootaxa.5512.3.2
75515123FFCC2B2DFF1FC8C3884BB796.taxon	etymology	Etymology. The species epithet refers to the name of one collector of the type materials (Mr. T. Weir).	en	Huang, Tian, Zhou, Yu-Lingzi, Janák, Jiří, Zhou, Hong-Zhang (2024): Four new species and a key to Australian species of the genus Diochus Erichson (Coleoptera: Staphylinidae, Staphylininae, Diochini). Zootaxa 5512 (3): 343-372, DOI: 10.11646/zootaxa.5512.3.2, URL: http://dx.doi.org/10.11646/zootaxa.5512.3.2
75515123FFC12B2AFF1FCAAE897EB0A2.taxon	description	(Figs 4 - 1; 4 - 2)	en	Huang, Tian, Zhou, Yu-Lingzi, Janák, Jiří, Zhou, Hong-Zhang (2024): Four new species and a key to Australian species of the genus Diochus Erichson (Coleoptera: Staphylinidae, Staphylininae, Diochini). Zootaxa 5512 (3): 343-372, DOI: 10.11646/zootaxa.5512.3.2, URL: http://dx.doi.org/10.11646/zootaxa.5512.3.2
75515123FFC12B2AFF1FCAAE897EB0A2.taxon	materials_examined	Type locality. AUSTRALIA: Northern Territory: 4 km S Jarrnarm, Keep River Nat. Pk. Type material. Holotype: male, AUSTRALIA: Northern Territory: (15.48 S 129.06 E) 4 km S Jarrnarm, Keep River Nat. Pk., 29. V. 2001, T. Weir, P. Bouchard (ANIC). Paratypes: AUSTRALIA: Northern Territory: 2 males, (15 ° 45 ’ S, 129 ° 07 ’ E) Keep R, 2.5 km NE by E Jarrnarm, Keep River NP, 6. VI. 2001, Calder At light (ANIC); 1 male, (12.17 S, 133.13 E) 18 km E by N of Oenpelli, 1. VI. 1973, Matthews & Upton (ANIC); Western Australia: 8 specimens, (14.25 S, 126.40 E) CALM Site 4 / 3 14 km S by E Kalumburu Mission, 3 − 6. VI. 1988, T. Weir (ANIC, JJRC).	en	Huang, Tian, Zhou, Yu-Lingzi, Janák, Jiří, Zhou, Hong-Zhang (2024): Four new species and a key to Australian species of the genus Diochus Erichson (Coleoptera: Staphylinidae, Staphylininae, Diochini). Zootaxa 5512 (3): 343-372, DOI: 10.11646/zootaxa.5512.3.2, URL: http://dx.doi.org/10.11646/zootaxa.5512.3.2
75515123FFC12B2AFF1FCAAE897EB0A2.taxon	description	Measurements. BL = 4.83 mm, FL = 2.38 mm, HL = 0.65 mm, HW = 0.49 mm, EL = 0.22 mm, TL = 0.34 mm, ANL = 1.39 mm, ANT 1 = 0.18 mm, ANT 2 = 0.12 mm, ANT 3 = 0.16 mm, ANT 4 = 0.12 mm, ANT 11 = 0.15 mm, PL = 0.89 mm, PW = 0.72 mm, EL = 0.89 mm, EW = 1.01 mm, SL = 0.62 mm. Description. Body (Fig 4 - 1 A) long, narrowed anteriorly and posteriorly, medium to large-sized. Body entirely dark brown, abdominal intersegmental membrane lighter. Legs yellowish brown, tarsi distinctly lighter. Antennomeres 1 − 5 brown, 6 − 11 light brown, apex of each antennomere lighter, 6 − 11 gradually lightened. Maxillary and labial palpi brown. Head (Fig 4 - 1 A). Oblong in shape, 1.34 times as long as wide. Tempora straight and parallel, posterior angles rounded. Dorsal surface shiny, bearing distinct and transverse microstriae, also with coarse and sparse punctures. Head with 5 − 7 irregular, punctures scattered around each eye and numerous smaller punctures on deflexed portion of tempus and near posterior margin. Each side of cranium with characteristic punctures: one frontal puncture on frontal region, two anterolateral punctures near antennal insertion, three lateral punctures near dorsal margin of eye, with temporal puncture and occipital puncture near basal margin; disc surface bearing two additional paired punctures in middle area. Frontal furrows and anteocular furrows absent. Eye large-sized, distinctly protruding laterad, longitudinal diameter about half of length of tempora (eye: tempora = 0.64). Epistoma not flattened, abruptly oblique, anterior margin slightly emarginate medially. Distance between antennal insertions (0.13 mm) distinctly longer than distance from antenna to eye (0.07 mm). Ventral surface with scattered punctures, interspaces between them about 4 puncture diameters. Gular sutures deep, confluent at basal 1 / 4, then extended to base. Antennae (Fig 4 - 1 B). Scape rod-shaped, slightly thickened apically, shorter than two subsequent antennomeres combined; antennomere 2 slightly elongate, 3 distinctly longer than 2; 4 about twice the width, 4 to 10 gradually shortened, 4 observably longer than 10; 11 distinctly longer than 10. Mouthparts. Labrum oval-shaped, lateral margin rounded, widest at basal 1 / 2; width of anterior margin about half of width at widest point. Mandibles (Fig 4 - 1 D) falciform, left one with three small teeth on inner margin, whereas right one with two. Neck. Cylindrical, shiny, only bearing shallow microsculpture, width 0.15 mm, shorter than 1 / 3 of head width. Dorsal surface with distinct groove; ventral surface with gular sutures forming obvious triangular region, with deep transverse median furrow. Prothorax (Fig 4 - 1 A). Pronotum elongate (PL to PW ratio 1.20), distinctly longer and wider than head. Anterior region near anterior angles deflexed, lateral margins widened posteriad to basal 1 / 3 (widest at 1 / 3), then convergent backwards, anterior and posterior angles broadly rounded. Dorsal surface glossy, extensively with micropunctures, but without any microsculpture. Each side of longitudinal midline with one row of punctures composing of 3 large punctures and 2 additional punctures outside of puncture row, 13 – 15 punctures scatted near each margin (including anterior, lateral and posterior margins). Prosternum bearing transverse ridge between basisternum and furcasternum, angularly backwards. Pterothorax (Fig 4 - 1 A). Mesoscutellum triangular and small, surface shiny, bearing distinct microstriae, but without any punctures. Transverse ridge on mesoventrite wave shaped; paired oblique furrows short but deep; carina limiting mesocoxal cavity slightly arcuate. Discrimen region on metaventrite normally elevated. Elytra (Fig 4 - 1 A). Transverse and short (EL to EW ratio 0.87), distinctly longer and wider than pronotum. Humeri well developed, lateral margins divergent posteriorly, hind margin not rounded, but obliquely truncate. Dorsal surface shiny, flattened, without microsculpture; each elytron with row of 5 punctures along suture, row of 5 punctures in median, also with 4 − 5 rows of punctures on deflexed portion. Legs (Fig 4 - 1 C). First four segments of protarsi heart-shaped, moderately dilated, and those of meso- and metatarsi slender. Last segment of protarsi almost equal to 2 − 4 together, that of meso-, meta- slightly shorter than length of each 2 − 3. Abdomen (Fig 4 - 1 A). Broadest at segment V. Tergites III – VII covered with dense and transverse microstriae; each tergite with dense yellow pubescence, also with row of darker and coarser setae at posterior margin of tergites III – VI. Tergites III – VII with basal impression near anterior margin, respectively, each one only possessing one basal transverse carina. All abdominal tergites surface shiny, bearing polygonal reticulum, with dense punctures. Posterior margin of tergite VII with distinct palisade fringe. All abdominal sternites shiny, with microstriae and punctures as those on tergites. Male (Figs 4 - 1 E – J; 4 - 2 A – E). Head with small round elevation between eyes. Posterior margin of sternite VIII acute on both sides, emarginate medially, emargination wide and shallow, each side with another shallower emargination (Figs 4 - 1 E; 4 - 2 B). Posterior margin of tergite VIII arcuate (Figs 4 - 1 F; 4 - 2 C). Tergite IX (Figs 4 - 1 G; 4 - 2 D) symmetrical, connected mediobasally, narrowed apically. Sternite IX (Figs 4 - 1 H; 4 - 2 E) asymmetrical, widest near basal 1 / 3 to 1 / 2; basal margin straight, apical margin normally emarginated; width of basal margin about 1 / 3 width of apical margin. Tergite X (Figs 4 - 1 G; 4 - 2 D) symmetrical, triangular. Aedeagus (Figs 4 - 1 I – J; 4 - 2 A) symmetrical, large-sized, ca. 0.97 mm long, normally sclerotized. Parameres symmetrical, thick and short, about 1 / 7 length of median lobe. Internal structures sclerotized, composed of four parts: two paired strips shaped sclerites located on both sides, parallel, lateral one slender, in black color, other broader, in brown color; 3 sclerites in middle: paired rectangular sclerites in brown color, one Y-shaped sclerite in brown to black color. Sperm pump coiled, thinned toward apex. Female (Fig 4 - 2 F). Head without elevation between eyes. Sternite VIII with posterior margin rounded. Tergite IX bearing numerous setae, elongate and sharply pointed apically. Sternite IX symmetrical, with deep concaved margin in middle. Tergite X broad, basal margin curved. Sternite X slender and rhomboidal, with numerous setae in lower half. Tube of spermatheca long and sclerotized, with several bends.	en	Huang, Tian, Zhou, Yu-Lingzi, Janák, Jiří, Zhou, Hong-Zhang (2024): Four new species and a key to Australian species of the genus Diochus Erichson (Coleoptera: Staphylinidae, Staphylininae, Diochini). Zootaxa 5512 (3): 343-372, DOI: 10.11646/zootaxa.5512.3.2, URL: http://dx.doi.org/10.11646/zootaxa.5512.3.2
75515123FFC12B2AFF1FCAAE897EB0A2.taxon	distribution	Distribution. Northern Territory and Western Australia.	en	Huang, Tian, Zhou, Yu-Lingzi, Janák, Jiří, Zhou, Hong-Zhang (2024): Four new species and a key to Australian species of the genus Diochus Erichson (Coleoptera: Staphylinidae, Staphylininae, Diochini). Zootaxa 5512 (3): 343-372, DOI: 10.11646/zootaxa.5512.3.2, URL: http://dx.doi.org/10.11646/zootaxa.5512.3.2
75515123FFC12B2AFF1FCAAE897EB0A2.taxon	diagnosis	Diagnosis. This species can be distinguished from D. octavii and D. weiri sp. nov. by the shape of the male sternite VIII.	en	Huang, Tian, Zhou, Yu-Lingzi, Janák, Jiří, Zhou, Hong-Zhang (2024): Four new species and a key to Australian species of the genus Diochus Erichson (Coleoptera: Staphylinidae, Staphylininae, Diochini). Zootaxa 5512 (3): 343-372, DOI: 10.11646/zootaxa.5512.3.2, URL: http://dx.doi.org/10.11646/zootaxa.5512.3.2
75515123FFC12B2AFF1FCAAE897EB0A2.taxon	etymology	Etymology. The species is dedicated to Dr. John F. Lawrence (Australia) in recognition of his outstanding contributions to the study of Coleoptera and in celebration of his 90 th birthday this year.	en	Huang, Tian, Zhou, Yu-Lingzi, Janák, Jiří, Zhou, Hong-Zhang (2024): Four new species and a key to Australian species of the genus Diochus Erichson (Coleoptera: Staphylinidae, Staphylininae, Diochini). Zootaxa 5512 (3): 343-372, DOI: 10.11646/zootaxa.5512.3.2, URL: http://dx.doi.org/10.11646/zootaxa.5512.3.2
75515123FFC62B36FF1FCDBA8F57B45A.taxon	description	(Figs 5 - 1; 5 - 2)	en	Huang, Tian, Zhou, Yu-Lingzi, Janák, Jiří, Zhou, Hong-Zhang (2024): Four new species and a key to Australian species of the genus Diochus Erichson (Coleoptera: Staphylinidae, Staphylininae, Diochini). Zootaxa 5512 (3): 343-372, DOI: 10.11646/zootaxa.5512.3.2, URL: http://dx.doi.org/10.11646/zootaxa.5512.3.2
75515123FFC62B36FF1FCDBA8F57B45A.taxon	materials_examined	Type locality. AUSTRALIA: Western Australia: “ Marun ”, CALM Site 8 / 4 Prince Frederick Harbour. Type material. Holotype: male, AUSTRALIA: Western Australia: (15.00 S 125.21 E) “ Marun ”, CALM Site 8 / 4 Prince Frederick Harbour, 6 − 11. VI. 1988, I. D. Naumann (ANIC). Paratypes: AUSTRALIA: Western Australia: 1 male, 3 females, with same data as holotype.	en	Huang, Tian, Zhou, Yu-Lingzi, Janák, Jiří, Zhou, Hong-Zhang (2024): Four new species and a key to Australian species of the genus Diochus Erichson (Coleoptera: Staphylinidae, Staphylininae, Diochini). Zootaxa 5512 (3): 343-372, DOI: 10.11646/zootaxa.5512.3.2, URL: http://dx.doi.org/10.11646/zootaxa.5512.3.2
75515123FFC62B36FF1FCDBA8F57B45A.taxon	description	Measurements. BL = 4.07 mm, FL = 1.95 mm, HL = 0.52 mm, HW = 0.43 mm, EL = 0.14 mm, TL = 0.29 mm, ANL = 1.04 mm, ANT 1 = 0.14 mm, ANT 2 = 0.09 mm, ANT 3 = 0.11 mm, ANT 4 = 0.08 mm, ANT 11 = 0.11 mm, PL = 0.73 mm, PW = 0.60 mm, EL = 0.72 mm, EW = 0.89 mm, SL = 0.56 mm. Description. Body (Fig 5 - 1 A) long, narrowed anteriorly and posteriorly, medium-sized. Body entirely dark brown, abdominal intersegmental membrane lighter. Legs yellowish brown, tarsi distinctly lighter. Antennomeres brown, apex of each antennomere lighter. Maxillary and labial palpi brown. Head (Fig 5 - 1 A). Oblong in shape, 1.21 times as long as wide. Tempora slightly widened backwards, posterior angles rounded. Dorsal surface shiny, bearing distinct and transverse microstriae, also with coarse and sparse punctures. Head with 5 − 7 irregular, punctures scattered around each eye, and with numerous smaller punctures on deflexed portion of tempus and near posterior margin. Each side of cranium with characteristic punctures: one frontal puncture on frontal region, two anterolateral punctures near antennal insertion, three lateral punctures near dorsal margin of eye, with temporal puncture and occipital puncture near basal margin; disc surface bearing two additional paired punctures in middle area. Frontal furrows and anteocular furrows absent. Eye medium-sized, distinctly protruding laterad, longitudinal diameter about half of length of tempora (eye: tempora = 0.49). Epistoma not flattened, abruptly oblique, anterior margin slightly emarginate medially. Distance between antennal insertions (0.12 mm) distinctly longer than distance from antenna to eye (0.06 mm). Ventral surface with scattered punctures, interspaces between them about 4 puncture diameters. Gular sutures deep, confluent at basal 1 / 5, then extended to base. Antennae (Fig 5 - 1 B). Scape rod-shaped, slightly thickened apically, shorter than two subsequent antennomeres combined; antennomere 2 not elongate, 3 slightly longer than 2; 4 about 1.5 times of the width, 4 to 10 gradually shortened, 4 observably longer than 10; 11 distinctly longer than 10. Mouthparts. Labrum nearly hexagonal, anterior margin almost straight, lateral margin straight, with widest at basal half; width of apical margin about half of width at widest point. Mandibles (Fig 5 - 1 D) falciform, left one with three small teeth on inner margin, whereas right one with two. Neck. Cylindrical, shiny, only bearing shallow microsculpture, width 0.14 mm, shorter than 1 / 3 of head width. Dorsal surface with distinct groove; ventral surface with gular sutures forming obvious triangular region, with deep transverse median furrow. Prothorax (Fig 5 - 1 A). Pronotum elongate (PL to PW ratio 1.22), distinctly longer and wider than head. Anterior region near anterior angles deflexed, lateral margins widened posteriad to basal 1 / 4 (widest at 1 / 4), then convergent backwards, anterior and posterior angles broadly rounded. Dorsal surface glossy, extensively with micropunctures, but without any microsculpture. Each side of longitudinal midline with one row of punctures composing of 3 large punctures and 2 additional punctures outside of puncture row, 13 – 15 punctures scatted near each margin (including anterior, lateral and posterior margins). Prosternum bearing transverse ridge between basisternum and furcasternum, angularly backwards. Pterothorax (Fig 5 - 1 A). Mesoscutellum triangular and small, surface shiny, bearing distinct microstriae, but without any punctures. Transverse ridge on mesoventrite wave shaped; paired oblique furrows short but deep; carina limiting mesocoxal cavity slightly arcuate. Discrimen region on metaventrite normally elevated. Elytra (Fig 5 - 1 A). Transverse and short (EL to EW ratio 0.81), distinctly longer and wider than pronotum. Humeri well developed, lateral margins divergent posteriorly, hind margin not rounded, but obliquely truncate. Dorsal surface shiny, flattened, without microsculpture; each elytron with row of 5 punctures along suture, row of 5 punctures in median, also with 4 − 5 rows of punctures on deflexed portion. Legs (Fig 5 - 1 C). First four segments of protarsi heart-shaped, moderately dilated, and those of meso- and metatarsi slender. Last segment of protarsi slightly longer than 2 − 4 together, that of meso-, meta- shorter than length of each 2 − 3. Abdomen (Fig 5 - 1 A). Broadest at segment V. Tergites III – VII covered with dense and transverse microstriae; each tergite with dense yellow pubescence, also with row of darker and coarser setae at posterior margin of III – VI. Tergites III – VII with basal impression near anterior margin, respectively, each one only possessing one basal transverse carina. All abdominal tergites with surface shiny, bearing polygonal reticulum, with dense punctures. Posterior margin of tergite VII with distinct palisade fringe. All abdominal sternites shiny, with microstriae and punctures as those on tergites. Male (Figs 5 - 1 E – J; 5 - 2 A – E). Head with small round elevation between eyes. Posterior margin of sternite VIII emarginate medially, each side with shallow emargination (Figs 5 - 1 E; 5 - 2 B). Posterior margin of tergite VIII arcuate (Figs 5 - 1 F; 5 - 2 C). Tergite IX (Figs 5 - 1 G; 5 - 2 D) symmetrical, connected mediobasally, narrowed apically. Sternite IX (Figs 5 - 1 H; 5 - 2 E) asymmetrical, widest near basal 1 / 2; basal margin straight, apical margin normally emarginated; width of apical margin about twice of width of basal margin. Tergite X (Figs 5 - 1 G; 5 - 2 D) symmetrical, triangular. Aedeagus (Figs 5 - 1 I – J; 5 - 2 A) symmetrical, small-sized, ca. 0.46 mm long, normally sclerotized. Parameres symmetrical, thick and short, about 1 / 4 length of median lobe. Internal structures sclerotized, composed of six parts: paired connected J-shaped sclerites at top, black color; two paired strips shaped sclerites located on both sides, lateral one in black color and other in brown color; 5 sclerites in middle: paired rectangular sclerites in brown color, paired round sclerites in black color, one tongue-shaped sclerite in yellow color. Sperm pump coiled, thinned toward apex. Female (Figs 5 - 2 F – I). Head without elevation between eyes. Sternite VIII (Fig 5 - 2 F) with posterior margin rounded. Tergite IX bearing numerous setae, elongate and sharply pointed apically. Sternite IX (Fig 5 - 2 H) symmetrical, with deep concaved margin in middle. Tergite X broad, basal margin curved. Sternite X (Fig 5 - 2 G) slender and rhomboidal, with numerous setae in lower half. Tube of spermatheca sclerotized, very long and strongly coiled (Fig 5 - 2 I).	en	Huang, Tian, Zhou, Yu-Lingzi, Janák, Jiří, Zhou, Hong-Zhang (2024): Four new species and a key to Australian species of the genus Diochus Erichson (Coleoptera: Staphylinidae, Staphylininae, Diochini). Zootaxa 5512 (3): 343-372, DOI: 10.11646/zootaxa.5512.3.2, URL: http://dx.doi.org/10.11646/zootaxa.5512.3.2
75515123FFC62B36FF1FCDBA8F57B45A.taxon	distribution	Distribution. Western Australia.	en	Huang, Tian, Zhou, Yu-Lingzi, Janák, Jiří, Zhou, Hong-Zhang (2024): Four new species and a key to Australian species of the genus Diochus Erichson (Coleoptera: Staphylinidae, Staphylininae, Diochini). Zootaxa 5512 (3): 343-372, DOI: 10.11646/zootaxa.5512.3.2, URL: http://dx.doi.org/10.11646/zootaxa.5512.3.2
75515123FFC62B36FF1FCDBA8F57B45A.taxon	diagnosis	Diagnosis. The species is small-sized, similar to D. pubiventris and D. divisus. The male can be distinguished from D. pubiventris by darker antennae and the shape of sternite VIII. The darker elytra of D. slipinskii sp. nov. easily distinguish it from D. divisus.	en	Huang, Tian, Zhou, Yu-Lingzi, Janák, Jiří, Zhou, Hong-Zhang (2024): Four new species and a key to Australian species of the genus Diochus Erichson (Coleoptera: Staphylinidae, Staphylininae, Diochini). Zootaxa 5512 (3): 343-372, DOI: 10.11646/zootaxa.5512.3.2, URL: http://dx.doi.org/10.11646/zootaxa.5512.3.2
75515123FFC62B36FF1FCDBA8F57B45A.taxon	etymology	Etymology. The species is dedicated to Dr. Adam Ślipiński (Australia) in recognition of his outstanding contributions to the study of Coleoptera.	en	Huang, Tian, Zhou, Yu-Lingzi, Janák, Jiří, Zhou, Hong-Zhang (2024): Four new species and a key to Australian species of the genus Diochus Erichson (Coleoptera: Staphylinidae, Staphylininae, Diochini). Zootaxa 5512 (3): 343-372, DOI: 10.11646/zootaxa.5512.3.2, URL: http://dx.doi.org/10.11646/zootaxa.5512.3.2
75515123FFDA2B33FF1FC9E38F3DB4EE.taxon	description	(Figs 6 - 1; 6 - 2) Fauvel, 1877: 235 (Type locality: Australie, Nouvelle Galles du Sud); Olliff, 1887: 473 (characters; Australia); Bernhauer and Schubert, 1914: 319 (catalog); Lea, 1925: 220 (characters; Australia).	en	Huang, Tian, Zhou, Yu-Lingzi, Janák, Jiří, Zhou, Hong-Zhang (2024): Four new species and a key to Australian species of the genus Diochus Erichson (Coleoptera: Staphylinidae, Staphylininae, Diochini). Zootaxa 5512 (3): 343-372, DOI: 10.11646/zootaxa.5512.3.2, URL: http://dx.doi.org/10.11646/zootaxa.5512.3.2
75515123FFDA2B33FF1FC9E38F3DB4EE.taxon	materials_examined	Type material examined. AUSTRALIA: Lectotype [designated here]: female, “ Nlle Galles du Sud ” (Fauvelʼs handwriting) // “ divisus Fvl. ” (Fauvelʼs handwriting) // “ Ex-Typis ” (printed, red letters) // “ R. I. Sc. N. B. 17.479 Coll. et det. A. Fauvel ” (printed) (IRSNB); Paralectotype: female, “ Nlle Galles du Sud ” (curatorʼs handwriting) // “ Ex-Typis ” (printed, red letters) // “ R. I. Sc. N. B. 17.479 Diochus divisus Fauv. Coll. et det. A. Fauvel ” (printed and with curatorʼs handwriting) (IRSNB). Note. We examined two female syntypes from the Fauvelʼs collection. Both specimens were remounted, glued on new card plates, spermathecae and last abdominal segments were embedded in Euparal on plastic plates placed on the same pin as the respective specimen together with an original small rectangular card plate. The first specimen labelled with Fauvelʼs handwriting was chosen as a lectotype to stabilize the taxonomic position of the species and the following label was added to the specimen: “ LECTOTYPUS Diochus divisus Fauvel, Huang, Zhou, Janák et Zhou des. 2024 ”. The second specimen labelled with curators handwriting was designated as a paralectotype and the following label was added to the specimen: “ PARALECTOTYPUS Diochus divisus Fauvel, Huang, Zhou, Janák et Zhou des. 2024 ”.	en	Huang, Tian, Zhou, Yu-Lingzi, Janák, Jiří, Zhou, Hong-Zhang (2024): Four new species and a key to Australian species of the genus Diochus Erichson (Coleoptera: Staphylinidae, Staphylininae, Diochini). Zootaxa 5512 (3): 343-372, DOI: 10.11646/zootaxa.5512.3.2, URL: http://dx.doi.org/10.11646/zootaxa.5512.3.2
75515123FFDA2B33FF1FC9E38F3DB4EE.taxon	description	Measurements. BL = 3.73 mm, FL = 2.19 mm, HL = 0.58 mm, HW = 0.45 mm, EL = 0.16 mm, TL = 0.33 mm, PL = 0.76 mm, PW = 0.59 mm, EL = 0.79 mm, EW = 0.76 mm, SL = 0.53 mm. Redescription. Body (Fig 6 - 1 A, E) long, narrowed anteriorly and posteriorly, medium-sized. Body reddish brown, abdomen brown with intersegmental membrane and apical margins segments reddish, posterior half of elytra and abdominal segments VII and VIII light reddish yellow, mouthparts, legs and antennae light reddish yellow, tarsi yellow, antennomeres 3 − 7 very slightly infuscate. Maxillary and labial palpi light reddish yellow. Head (Fig 6 - 1 B). Moderately long and wide, 1.29 times as long as wide. Tempora slightly rounded and widened behind, posterior angles rounded. Dorsal surface shiny, bearing very fine hardly visible transverse microstriae and mesh, also with coarse and very sparse punctures. Head with 5 − 7 irregular punctures scattered around each eye and numerous smaller punctures on deflexed portion of tempus and near posterior margin. Each side of cranium with characteristic punctures: one frontal puncture on frontal region, two anterolateral punctures near antennal insertion, three lateral punctures near dorsal margin of eye, with temporal puncture and occipital puncture near basal margin; disc surface bearing two additional paired punctures in middle area. Frontal furrows and anteocular furrows absent. Eye large-sized, slightly protruding laterad, longitudinal diameter about half of length of tempora (eye: tempora = 0.47). Epistoma not flattened, abruptly oblique, anterior margin slightly emarginate medially. Ventral surface with scattered punctures, interspaces between them about 4 puncture diameters. Gular sutures deep, confluent at basal 1 / 4, then extended to base. Antennae (Fig 6 - 1 C). Scape rod-shaped, slightly thickened apically, shorter than two subsequent antennomeres combined; antennomere 2 elongate, 3 slightly longer than 2; 4 about 1.5 as long as wide, 5 to 10 gradually shortened, 4 about as long as 10; 11 distinctly longer than 10. Mouthparts. Labrum oval-shaped, lateral margin rounded, widest at basal 1 / 2; width of anterior margin about half the width at widest point. Mandibles falciform, left one with three small teeth on inner margin, whereas right one with two. Neck. Cylindrical, shiny, only bearing shallow microsculpture, shorter than 1 / 3 of head width. First half of dorsal surface depressed, with distinct groove. Ventral surface with gular sutures forming obvious triangular region, with deep transverse median furrow. Prothorax (Fig 6 - 1 B). Pronotum elongate (PL to PW ratio 1.29), distinctly longer and wider than head. Anterior region near anterior angles deflexed, lateral margins widened posteriad to basal 1 / 3 (widest at 1 / 3), then convergent backwards, anterior and posterior angles broadly rounded. Dorsal surface glossy, extensively with micropunctures, but without any microsculpture. Each side of longitudinal midline with one row of punctures composing of 3 large punctures and 2 additional punctures outside of puncture row, several punctures scatted near each margin (including anterior, lateral and posterior margins). Prosternum bearing transverse ridge between basisternum and furcasternum, angularly backwards. Pterothorax (Fig 6 - 1 B). Mesoscutellum triangular and small, surface shiny, bearing distinct microstriae, but without any punctures. Transverse ridge on mesoventrite wave shaped; paired oblique furrows short but deep; carina limiting mesocoxal cavity slightly arcuate. The discrimen region on metaventrite normally elevated. Elytra (Fig 6 - 1 B). About as long as wide (EL to EW ratio LT: 1.04, PLT: 0.99), slightly longer and distinctly wider than pronotum. Humeri well developed, lateral margins divergent posteriorly, hind margin not rounded, but obliquely truncate. Dorsal surface shiny, flattened, without microsculpture, finely coriaceous; each elytron with irregular row of 7 − 9 punctures along suture, row of 7 − 9 punctures in median, also with 7 − 9 punctures on deflexed portion. Legs (Fig 6 - 1 E). First four segments of protarsi heart-shaped, hardly dilated, and those of meso- and metatarsi slender. Last segment of protarsi almost equal to 2 − 4 together, that of meso-, meta- slightly shorter than length of each 2 − 3. Abdomen (Figs 6 - 1 A, E). Broadest at segment V. Tergites III – VII covered with deep transverse microstriae and mesh; each tergite with dense pubescence, also with row of darker and coarser setae at posterior margin of tergites III – VI. Tergites III – VII with basal impression near anterior margin, respectively, each one only possessing one basal transverse carina. All abdominal tergites dull, with fine and very dense puncturation, distance between punctures mostly as large as diameter of puncture. Posterior margin of tergite VII with distinct palisade fringe. All abdominal sternites dull, with microstriae and punctures as those on tergites. Male. Unknown. Female. (Fig 6 - 2 A – D). Head without elevation between eyes. Sternite VIII with posterior margin rounded. Tergite IX (Fig 6 - 2 A) bearing numerous setae, elongate and rounded apically. Sternite IX (Fig 6 - 2 B) symmetrical, with deep concaved margin in middle. Tergite X broad, basal margin curved. Sternite X (Fig 6 - 2 B) slender and rhomboidal, with numerous setae in lower half. Tube of spermatheca sclerotized, very long and strongly coiled (Fig 6 - 2 C – D).	en	Huang, Tian, Zhou, Yu-Lingzi, Janák, Jiří, Zhou, Hong-Zhang (2024): Four new species and a key to Australian species of the genus Diochus Erichson (Coleoptera: Staphylinidae, Staphylininae, Diochini). Zootaxa 5512 (3): 343-372, DOI: 10.11646/zootaxa.5512.3.2, URL: http://dx.doi.org/10.11646/zootaxa.5512.3.2
75515123FFDA2B33FF1FC9E38F3DB4EE.taxon	diagnosis	Diagnosis. The female type specimens resemble D. pubiventris in body size, but it has distinctly light color on the apical half of elytra (Fig 6 - 1 A, E). The spermatheca of this species is very long and coiled multiple times (Figs 6 - 2 C−D), whereas the spermatheca of D. pubiventris is much shorter with fewer coils (Fig 9 - 3 I).	en	Huang, Tian, Zhou, Yu-Lingzi, Janák, Jiří, Zhou, Hong-Zhang (2024): Four new species and a key to Australian species of the genus Diochus Erichson (Coleoptera: Staphylinidae, Staphylininae, Diochini). Zootaxa 5512 (3): 343-372, DOI: 10.11646/zootaxa.5512.3.2, URL: http://dx.doi.org/10.11646/zootaxa.5512.3.2
75515123FFDA2B33FF1FC9E38F3DB4EE.taxon	distribution	Distribution. New South Wales.	en	Huang, Tian, Zhou, Yu-Lingzi, Janák, Jiří, Zhou, Hong-Zhang (2024): Four new species and a key to Australian species of the genus Diochus Erichson (Coleoptera: Staphylinidae, Staphylininae, Diochini). Zootaxa 5512 (3): 343-372, DOI: 10.11646/zootaxa.5512.3.2, URL: http://dx.doi.org/10.11646/zootaxa.5512.3.2
75515123FFDE2B32FF1FC8C38F3CB72B.taxon	description	(Fig 7) Lea, 1929: 203 (Type locality: Western Australia: Bunbury).	en	Huang, Tian, Zhou, Yu-Lingzi, Janák, Jiří, Zhou, Hong-Zhang (2024): Four new species and a key to Australian species of the genus Diochus Erichson (Coleoptera: Staphylinidae, Staphylininae, Diochini). Zootaxa 5512 (3): 343-372, DOI: 10.11646/zootaxa.5512.3.2, URL: http://dx.doi.org/10.11646/zootaxa.5512.3.2
75515123FFDE2B32FF1FC8C38F3CB72B.taxon	materials_examined	Type material examined. AUSTRALIA: Western Australia: Holotype: Lea, TYPE / longus / Bunbury // 20429 / Diochus / longus Lea / W. Australia / TYPE // SAMA Database / No. 25 - 035652 (SAM, only photographs of the type available).	en	Huang, Tian, Zhou, Yu-Lingzi, Janák, Jiří, Zhou, Hong-Zhang (2024): Four new species and a key to Australian species of the genus Diochus Erichson (Coleoptera: Staphylinidae, Staphylininae, Diochini). Zootaxa 5512 (3): 343-372, DOI: 10.11646/zootaxa.5512.3.2, URL: http://dx.doi.org/10.11646/zootaxa.5512.3.2
75515123FFDE2B32FF1FC8C38F3CB72B.taxon	diagnosis	Diagnosis. Both this species and D. slipinskii sp. nov. exhibit short antennae, yet antennomeres 3 − 8 are notably transverse and darker in color in this species (Fig 7).	en	Huang, Tian, Zhou, Yu-Lingzi, Janák, Jiří, Zhou, Hong-Zhang (2024): Four new species and a key to Australian species of the genus Diochus Erichson (Coleoptera: Staphylinidae, Staphylininae, Diochini). Zootaxa 5512 (3): 343-372, DOI: 10.11646/zootaxa.5512.3.2, URL: http://dx.doi.org/10.11646/zootaxa.5512.3.2
75515123FFDE2B32FF1FC8C38F3CB72B.taxon	distribution	Distribution. Western Australia.	en	Huang, Tian, Zhou, Yu-Lingzi, Janák, Jiří, Zhou, Hong-Zhang (2024): Four new species and a key to Australian species of the genus Diochus Erichson (Coleoptera: Staphylinidae, Staphylininae, Diochini). Zootaxa 5512 (3): 343-372, DOI: 10.11646/zootaxa.5512.3.2, URL: http://dx.doi.org/10.11646/zootaxa.5512.3.2
75515123FFDE2B30FF1FCA328CC3B0DA.taxon	description	(Fig 8) Fauvel, 1877: 235 (Type locality: Australe, Victoria); Fauvel, 1878: 535 (Australia); Olliff, 1887: 472 (characters; Australia); Bernhauer and Schubert, 1914: 319 (catalog); Bernhauer, 1920: 16 (Australia); Lea, 1925: 220 (characters; Australia).	en	Huang, Tian, Zhou, Yu-Lingzi, Janák, Jiří, Zhou, Hong-Zhang (2024): Four new species and a key to Australian species of the genus Diochus Erichson (Coleoptera: Staphylinidae, Staphylininae, Diochini). Zootaxa 5512 (3): 343-372, DOI: 10.11646/zootaxa.5512.3.2, URL: http://dx.doi.org/10.11646/zootaxa.5512.3.2
75515123FFDE2B30FF1FCA328CC3B0DA.taxon	materials_examined	Type material examined. AUSTRALIA: Victoria: Holotype: male, “ Victoria / Australie ” (Fauvelʼs handwriting) // “ Wu [?] – Bay ” (Fauvelʼs handwriting) // “ TYPE ” (red, printed) // “ Diochus / octavii Fvl. ” (Fauvelʼs handwriting) // “ R. I. Sc. N. B. 17.479 / Coll. et det. A. Fauvel ” (printed) (IRSNB). Note. We examined the unique male type from the Fauvel collection (IRNB). The specimen was remounted, glued on a new card plate, aedeagus and last abdominal segments were embedded in Euparal on a plastic plate placed at the same pin as the specimens together with the original small rectangular card plate. As Fauvel (1877) mentioned in the description “ Un seul exemplaire ” and the specimen was labeled as “ TYPE ” there is no doubt that it is a holotype of the species.	en	Huang, Tian, Zhou, Yu-Lingzi, Janák, Jiří, Zhou, Hong-Zhang (2024): Four new species and a key to Australian species of the genus Diochus Erichson (Coleoptera: Staphylinidae, Staphylininae, Diochini). Zootaxa 5512 (3): 343-372, DOI: 10.11646/zootaxa.5512.3.2, URL: http://dx.doi.org/10.11646/zootaxa.5512.3.2
75515123FFDE2B30FF1FCA328CC3B0DA.taxon	description	Measurements. BL = 4.47 mm, FL = 2.49 mm, HL = 0.69 mm, HW = 0.51 mm, EL = 0.19 mm, TL = 0.40 mm, PL = 0.89 mm, PW = 0.68 mm, EL = 0.85 mm, EW = 0.85 mm, SL = 0.63 mm. Redescription. Body (Fig 8 A) long, narrowed anteriorly and posteriorly, medium-sized. Body entirely dark brown to black, abdominal intersegmental membrane and abdominal segments VIII−X lighter, reddish brown. Legs yellowish brown, tarsi distinctly lighter. Antennomeres 1 − 3 light brown, 4 − 8 dark brown, 9 − 11 yellowish brown, apex of each antennomere lighter. Maxillary and labial palpi yellowish brown. Head (Fig 8 B). Long and narrow, 1.35 times as long as wide. Tempora straight and parallel, posterior angles rounded. Dorsal surface shiny, bearing very fine transverse microstriae and mesh, also with coarse and very sparse punctures. Head with 5 − 7 irregular punctures scattered around each eye and numerous smaller punctures on deflexed portion of tempus and near posterior margin. Each side of cranium with characteristic punctures: one frontal puncture on frontal region, two anterolateral punctures near antennal insertion, three lateral punctures near dorsal margin of eye, with temporal puncture and occipital puncture near basal margin; disc surface bearing two additional paired punctures in middle area. Frontal furrows and anteocular furrows absent. Eye large-sized, slightly protruding laterad, longitudinal diameter about half of length of tempora (eye: tempora = 0.48). Epistoma not flattened, abruptly oblique, anterior margin slightly emarginate medially. Ventral surface with scattered punctures, interspaces between them about 4 puncture diameters. Gular sutures deep, confluent at basal 1 / 4, then extended to base. Antennae (Fig 8 C). Scape rod-shaped, slightly thickened apically, shorter than two subsequent antennomeres combined; antennomere 2 slightly elongate, 3 distinctly longer than 2; 4 about twice the width, 4 to 10 gradually shortened, 4 observably longer than 10; 11 distinctly longer than 10. Mouthparts. Labrum oval-shaped, lateral margin rounded, widest at basal 1 / 2; width of anterior margin is about half of width at widest point. Mandibles falciform, left one with three small teeth on inner margin, whereas right one with two. Neck. Cylindrical, shiny, only bearing shallow microsculpture, shorter than 1 / 3 of head width. First half of dorsal surface depressed, with distinct groove. Ventral surface with gular sutures forming obvious triangular region, with deep transverse median furrow. Prothorax (Fig 8 B). Pronotum elongate (PL to PW ratio 1.29), distinctly longer and wider than head. Anterior region near anterior angles deflexed, lateral margins widened posteriad to basal 1 / 3 (widest at 1 / 3), then convergent backwards, anterior and posterior angles broadly rounded. Dorsal surface glossy, extensively with micropunctures, but without any microsculpture. Each side of longitudinal midline with one row of punctures composing of 3 large punctures and 2 additional punctures outside of puncture row, several punctures scatted near each margin (including anterior, lateral and posterior margins). Prosternum bearing transverse ridge between basisternum and furcasternum, angularly backwards. Pterothorax (Fig 8 B). Mesoscutellum triangular and small, surface shiny, bearing distinct microstriae, but without any punctures. Transverse ridge on mesoventrite wave shaped; paired oblique furrows short but deep; carina limiting mesocoxal cavity slightly arcuate. Discrimen region on metaventrite normally elevated. Elytra (Fig 8 B). Slightly transverse (EL to EW ratio 0.95), distinctly longer and wider than pronotum. Humeri well developed, lateral margins divergent posteriorly, hind margin not rounded, but obliquely truncate. Dorsal surface shiny, flattened, without microsculpture, finely coriaceous; each elytron with row of 5 − 7 punctures along suture, row of 7 punctures in median, also with 5 − 7 punctures on deflexed portion. Legs (Fig 8 A). First four segments of protarsi heart-shaped, moderately dilated, and those of meso- and metatarsi slender. Last segment of protarsi almost equal to 2 − 4 together, that of meso-, meta- slightly shorter than length of each 2 − 3. Abdomen (Fig 8 A). Broadest at segment V. Tergites III – VII covered with very fine shallow transverse microstriae and mesh; each tergite with dense pubescence, also with row of darker and coarser setae at posterior margin of tergites III – VI. Tergites III – VII with basal impression near anterior margin, respectively, each one only possessing one basal transverse carina; all abdominal tergites with fine and moderately dense puncturation, distance between punctures larger than diameter of puncture. Posterior margin of tergite VII with distinct palisade fringe. All abdominal sternites shiny, with microstriae and punctures as those on tergites. Male (Figs 8 D – H). Head with small rounded, markedly protruding elevation between eyes. Posterior margin of sternite VIII slightly emarginated medially, both sides apicolaterally shortly emarginated, before apical margin with row of about 10 short stout dark setae (Fig 8 E). Posterior margin of tergite VIII arcuate (Fig 8 G). Tergite IX (Fig 8 F) symmetrical, connected mediobasally, narrowed apically. Sternite IX (Fig 8 H) almost symmetrical, widest near basal 1 / 3; basal margin straight, apical margin normally emarginated. Tergite X (Figs 8 F) symmetrical, triangular. Aedeagus (Figs 8 D) symmetrical, large-sized, ca. 0.62 mm long, normally sclerotized. Parameres symmetrical, thick and short, about 1 / 6 length of median lobe. Internal structures sclerotized, two paired strips shaped sclerites located on both sides, parallel, lateral one slender, in brown color, other broader, in brown color; 3 sclerites in middle: paired rectangular sclerites in brown color, one Y-shaped sclerite in brown to black color; additional paired triangular structure near apical point. Sperm pump coiled, thinned toward apex. Female. Unknown.	en	Huang, Tian, Zhou, Yu-Lingzi, Janák, Jiří, Zhou, Hong-Zhang (2024): Four new species and a key to Australian species of the genus Diochus Erichson (Coleoptera: Staphylinidae, Staphylininae, Diochini). Zootaxa 5512 (3): 343-372, DOI: 10.11646/zootaxa.5512.3.2, URL: http://dx.doi.org/10.11646/zootaxa.5512.3.2
75515123FFDE2B30FF1FCA328CC3B0DA.taxon	diagnosis	Diagnosis. Both this species and D. pubiventris have a distinctive row of thick setae along the middle apical margin of male sternite VIII (Fig 8 E, Fig 9 - 2 E). However, in this species, these setae are significantly stouter, and the apex of sternite VIII is not strongly projected.	en	Huang, Tian, Zhou, Yu-Lingzi, Janák, Jiří, Zhou, Hong-Zhang (2024): Four new species and a key to Australian species of the genus Diochus Erichson (Coleoptera: Staphylinidae, Staphylininae, Diochini). Zootaxa 5512 (3): 343-372, DOI: 10.11646/zootaxa.5512.3.2, URL: http://dx.doi.org/10.11646/zootaxa.5512.3.2
75515123FFDE2B30FF1FCA328CC3B0DA.taxon	distribution	Distribution. Victoria.	en	Huang, Tian, Zhou, Yu-Lingzi, Janák, Jiří, Zhou, Hong-Zhang (2024): Four new species and a key to Australian species of the genus Diochus Erichson (Coleoptera: Staphylinidae, Staphylininae, Diochini). Zootaxa 5512 (3): 343-372, DOI: 10.11646/zootaxa.5512.3.2, URL: http://dx.doi.org/10.11646/zootaxa.5512.3.2
75515123FFDC2B3BFF1FCE628ED8B492.taxon	description	(Figs 9 - 1; 9 - 2; 9 - 3) Lea, 1929: 203 (Type locality: North Australia: Darwin; New South Wales: Tamworth); Scheerpeltz, 1933: 1324 (catalog); Scheerpeltz, 1935: 649 (Australia).	en	Huang, Tian, Zhou, Yu-Lingzi, Janák, Jiří, Zhou, Hong-Zhang (2024): Four new species and a key to Australian species of the genus Diochus Erichson (Coleoptera: Staphylinidae, Staphylininae, Diochini). Zootaxa 5512 (3): 343-372, DOI: 10.11646/zootaxa.5512.3.2, URL: http://dx.doi.org/10.11646/zootaxa.5512.3.2
75515123FFDC2B3BFF1FCE628ED8B492.taxon	materials_examined	Type material examined. AUSTRALIA: Northern Territory: Paratype: male, Darwin / N. Territory / G. F. Hill // Diochus / pubiventris Lea / N. Territory (ANIC). Additional material: AUSTRALIA: Northern Territory: 2 males, 3 females, Port Darwin (NHMUK, JJRC); 4 males, 3 females, (12.46 S, 132.39 E) 12 km NNW of Mt. Cahill, 20. V. 1973, Matthews & Upton (ANIC); 5 males, 4 females, (15.48 S, 129.06 E) 4 km S Jarrnarm, Keep River Nat. Pk., 29. V. 2001, T. Weir, P. Bouchard (ANIC, JJRC); 1 male, 3 females, (12.17 S, 133.13 E) 18 km E by N of Oenpelli, 1. VI. 1973, Matthews & Upton (ANIC); 3 males, (15 ° 45 ’ S, 129 ° 07 ’ E) Keep R, 2.5 km NE by E Jarrnarm, Keep River NP, 6. VI. 2001, Calder At light (ANIC); Western Australia: 3 males, 1 female, (14.25 S, 126.40 E) CALM Site 4 / 3 14 km S by E Kalumburu Mission, 3 − 6. VI. 1988, T. Weir (ANIC); 1 female, (14.25 S, 126.38 E) CALM Site 13 / 4 12 km S of Kalumburu Mission, 7 − 11. VI. 1988, T. Weir (ANIC); Queensland: 1 female, (20.53 S, 148.57 E) Finlaysons Pt. N. QLD 2 km NW Seaforth, 4. III. 1983, A. Gillison (ANIC); 1 male, 4 females, (15.25 S, 145.03 E) 21 km W by N of Cooktown, 17. V. 1977, I. F. B. Common & E. D. Edwards (ANIC); 1 male, (12.43 S, 143.17 E) 9 km ENE of Mt. Tozer, 5 − 10. VII. 1986, T. Weir & A. Calder (ANIC); 1 female, (12.44 S, 143.13 E) 2 km NE by E of Mt. Tozer, 1. VII. 1986, T. Weir & A. Calder (ANIC).	en	Huang, Tian, Zhou, Yu-Lingzi, Janák, Jiří, Zhou, Hong-Zhang (2024): Four new species and a key to Australian species of the genus Diochus Erichson (Coleoptera: Staphylinidae, Staphylininae, Diochini). Zootaxa 5512 (3): 343-372, DOI: 10.11646/zootaxa.5512.3.2, URL: http://dx.doi.org/10.11646/zootaxa.5512.3.2
75515123FFDC2B3BFF1FCE628ED8B492.taxon	description	Measurements. BL = 4.11 mm, FL = 2.00 mm, HL = 0.54 mm, HW = 0.42 mm, EL = 0.16 mm, TL = 0.30 mm, ANL = 1.20 mm, ANT 1 = 0.17 mm, ANT 2 = 0.11 mm, ANT 3 = 0.12 mm, ANT 4 = 0.10 mm, ANT 11 = 0.13 mm, PL = 0.73 mm, PW = 0.58 mm, EL = 0.72 mm, EW = 0.79 mm, SL = 0.54 mm. Description. Body (Figs 9 - 1 A, 9 - 2 A) long, narrowed anteriorly and posteriorly, small to medium-sized. Body light brown to dark brown, abdominal intersegmental membrane lighter. Legs yellowish brown, tarsi distinctly lighter. Antennomeres 1 − 5 brown, 6 − 11 yellow, apex of each antennomere lighter, 6 − 11 gradually lightened. Maxillary and labial palpi brown. Head (Figs 9 - 1 A, 9 - 2 A). Oblong in shape, 1.29 times as long as wide. Tempora straight and parallel, posterior angles rounded. Dorsal surface shiny, bearing distinct and transverse microstriae, also with coarse and sparse punctures. Head with 5 − 7 irregular punctures scattered around each eye and numerous smaller punctures on deflexed portion of tempus and near posterior margin. Each side of cranium with characteristic punctures: one frontal puncture on frontal region, two anterolateral punctures near antennal insertion, three lateral punctures near dorsal margin of eye, with temporal puncture and occipital puncture near basal margin; disc surface bearing two additional paired punctures in middle area. Frontal furrows and anteocular furrows absent. Eye large-sized, distinctly protruding laterad, longitudinal diameter slightly shorter than half of length of tempora (eye: tempora = 0.53). Epistoma not flattened, abruptly oblique, anterior margin slightly emarginate medially. Distance between antennal insertions (0.13 mm) distinctly longer than distance from antenna to eye (0.06 mm). Ventral surface with scattered punctures, interspaces between them about 4 puncture diameters. Gular sutures deep, approaching to each other before 1 / 6, but not confluent, parallelly extended to base. Antennae (Fig 9 - 2 B). Total length 1.20 mm. Scape rod-shaped, slightly thickened apically, shorter than two subsequent antennomeres combined; antennomere 2 elongate; 3 slightly longer than 2; 4 about twice the width, 4 to 10 gradually shortened, 4 observably longer than 10; 11 distinctly longer than 10. Mouthparts. Labrum nearly hexagonal, lateral margin not straight, widest at basal 1 / 2; anterior margin narrow, about 1 / 5 of width at widest point. Mandibles (Figs 9 - 2 D) falciform, left one with three small teeth on inner margin, whereas right one with two. Neck. Cylindrical, shiny, only bearing shallow microsculpture, width 0.13 mm, shorter than 1 / 3 of head width. Dorsal surface with distinct groove; ventral surface with gular sutures forming obvious triangular region, with deep transverse median furrow. Prothorax (Figs 9 - 1 A, 9 - 2 A). Pronotum elongate (PL to PW ratio 1.27), distinctly longer and wider than head. Anterior region near anterior angles deflexed, lateral margins widened posteriad to basal 1 / 4 (widest at 1 / 4), then convergent backwards, anterior and posterior angles broadly rounded. Dorsal surface glossy extensively with micropunctures, but without any microsculpture. Each side of longitudinal midline with one row of punctures composing of 3 large punctures and 2 additional punctures outside of puncture row, 13 – 15 punctures scatted near each margin (including anterior, lateral and posterior margins). Prosternum bearing transverse ridge between basisternum and furcasternum, angularly backwards. Pterothorax (Figs 9 - 1 A, 9 - 2 A). Mesoscutellum triangular and small, surface shiny, bearing distinct microstriae, but without any punctures. Transverse ridge on mesoventrite wave shaped; paired oblique furrows short but deep; carina limiting mesocoxal cavity slightly arcuate. Discrimen region on metaventrite normally elevated. Elytra (Figs 9 - 1 A, 9 - 2 A). Transverse and short (EL to EW ratio 0.91), distinctly longer and wider than pronotum. Humeri well developed, lateral margins divergent posteriorly, hind margin not rounded, but obliquely truncate. Dorsal surface shiny, flattened, without microsculpture; each elytron with row of 5 punctures along suture, row of 5 punctures in median, also with 4 − 5 rows of punctures on deflexed portion. Legs (Figs 9 - 1 B, 9 - 2 C). First four segments of protarsi heart-shaped, dilated, and those of meso- and metatarsi slender. Last segment of protarsi slightly longer than 2 − 4 together, that of meso-, meta- slightly shorter than length of each 2 − 3. Abdomen (Figs 9 - 1 A, 9 - 2 A). Broadest at segment V. Tergites III – VII covered with dense and transverse microstriae; each tergite with dense yellow pubescence, also with row of darker and coarser setae at posterior margin of III – VI. Tergites III – VII with basal impression near anterior margin, respectively, each one only possessing one basal transverse carina; all abdominal tergites with surface shiny, bearing polygonal reticulum, with dense punctures. Posterior margin of tergite VII with distinct palisade fringe. All abdominal sternites shiny, with microstriae and punctures as those on tergites. Male (Figs 9 - 1 C−G, 9 - 2 E−J; 9 - 3 A−E). Head with small round elevation between eyes. Posterior margin of sternite VIII not emarginate medially, but straight, with several short setae, each side with deep concavity (Figs 9 - 1 C, 9 - 2 E; 9 - 3 B). Posterior margin of tergite VIII arcuate (Figs 9 - 1 D, 9 - 2 F; 9 - 3 C). Tergite IX (Figs 9 - 2 G; 9 - 3 D) symmetrical, connected mediobasally, narrowed apically. Sternite IX (Figs 9 - 1 E, 9 - 2 H; 9 - 3 E) asymmetrical, widest near basal 1 / 3 to 1 / 2; basal margin straight, apical margin normally emarginated; width of apical margin is about twice of basal margin. Tergite X (Figs 9 - 2 G; 9 - 3 D) symmetrical, triangular. Aedeagus (Figs 9 - 1 F−G, 9 - 2 I−J; 9 - 3 A) symmetrical, medium-sized, ca. 0.55 mm long, normally sclerotized. Parameres symmetrical, thick and short, about 1 / 7 length of median lobe. Internal structures sclerotized, composed of five parts: paired L-shaped sclerites on upper middle, in black color; two paired strips shaped sclerites located on both sides, in black color; 3 sclerites in middle: paired rectangular sclerites in brown color, one Y-shaped sclerite in brown to black color. Sperm pump coiled, thinned toward apex. Female (Figs 9 - 3 F – I). Head without elevation between eyes. Sternite VIII (Fig 9 - 3 F) with posterior margin rounded. Tergite IX bearing numerous setae, elongate and sharply pointed apically. Sternite IX (Fig 9 - 3 H) symmetrical, with a deep concaved margin in the middle. Tergite X broad, basal margin curved. Sternite X (Fig 9 - 3 G) slender and rhomboidal, with numerous setae in lower half. Tube of spermatheca sclerotized, long and coiled (Fig 9 - 3 I).	en	Huang, Tian, Zhou, Yu-Lingzi, Janák, Jiří, Zhou, Hong-Zhang (2024): Four new species and a key to Australian species of the genus Diochus Erichson (Coleoptera: Staphylinidae, Staphylininae, Diochini). Zootaxa 5512 (3): 343-372, DOI: 10.11646/zootaxa.5512.3.2, URL: http://dx.doi.org/10.11646/zootaxa.5512.3.2
75515123FFDC2B3BFF1FCE628ED8B492.taxon	diagnosis	Diagnosis. This species exhibits a wide distribution, and the distinctiveness of the male sternite VIII serves as the most reliable character for distinguishing it from other congeners.	en	Huang, Tian, Zhou, Yu-Lingzi, Janák, Jiří, Zhou, Hong-Zhang (2024): Four new species and a key to Australian species of the genus Diochus Erichson (Coleoptera: Staphylinidae, Staphylininae, Diochini). Zootaxa 5512 (3): 343-372, DOI: 10.11646/zootaxa.5512.3.2, URL: http://dx.doi.org/10.11646/zootaxa.5512.3.2
75515123FFDC2B3BFF1FCE628ED8B492.taxon	distribution	Distribution. Northern Territory, Western Australia, and Queensland.	en	Huang, Tian, Zhou, Yu-Lingzi, Janák, Jiří, Zhou, Hong-Zhang (2024): Four new species and a key to Australian species of the genus Diochus Erichson (Coleoptera: Staphylinidae, Staphylininae, Diochini). Zootaxa 5512 (3): 343-372, DOI: 10.11646/zootaxa.5512.3.2, URL: http://dx.doi.org/10.11646/zootaxa.5512.3.2
