taxonID	type	description	language	source
038287F67F62FFF5FD9840D6FB6B123E.taxon	description	Figs 1 – 10	en	Shveenkova, Yulia B., Babenko, Anatoly B. (2021): Two new species of the genus Psyllaphorura (Collembola: Onychiuridae) from the east of European Russia. Zootaxa 4965 (1): 114-128, DOI: 10.11646/zootaxa.4965.1.5
038287F67F62FFF5FD9840D6FB6B123E.taxon	materials_examined	Type material. Russia: holotype, male, European part, Middle Volga River Basin, Samara Region, “ Samarskaya Luka ” National Park, calcareous stone-pit near cave, Acer and Betula forest [N 53.4059 °, E 50.0794 °], soil, 02.05.2011, Yu. Shveenkova leg. Paratypes: 1 female and 4 males, same data as holotype; 1 juvenile, same biotope, but 13.06.2011; 2 males, 7 females and 1 juvenile, ibid., but 04.05.2019, Yu. Shveenkova leg. The types are kept in the collection of MSPU. Other material. 1 juvenile, European part of Russia, Penza Region, “ Privolzhskaya Lesostep ” State Nature Reserve, upper reaches of Sura River, floodplain Pinus forest [N 53.3169 °, E 46.8866 °], soil, 30.09.2014; 1 female and 2 juveniles, Penza Region, near Leonidovka settlement, nearby Lake “ Mertvoe ”, mixed forest, 21.07.2006; 2 juveniles, ibid., but Pinus forest. All Yu. Shveenkova leg.; 2 females and 4 juveniles, Penza Region, Zarechny town, Populus tremula and Betula forest, 01.05.2010, T. Gorbushina leg.; 1 male and 2 juveniles, European part of Russia, Kaluga Region, “ Kaluzhskie Zaseki ” State Nature Reserve, near Kireykovo settlement, broad-leaved forest, soil, 17.10.2005, A. Chernov leg.; 1 female, Republic of Bashkortostan, foothills of southern Urals, Burzyansky Region, “ Shulgan-Tash ” State Nature Reserve, “ Shulgan-Tash ” (“ Kapova ”) Cave, 17 – 23.07.2008, S. Kapralov leg.; 2 females and 4 juveniles, Middle Urals, Sverdlovsk Region, low reaches of Serga River, left bank, “ Olenyi Ruchyi ” National Nature Park, “ Bolshaya Arakaevskaya ” Cave, moss, 08.08.2002, M. Potapov and A. Potapov leg.; 1 male and 5 females, Mordovian Republic, Temnikovsky Region, Mordovian State Nature Reserve, floodplain Quercus robur forest, 18.08.1983, N. Kuznetsova leg.	en	Shveenkova, Yulia B., Babenko, Anatoly B. (2021): Two new species of the genus Psyllaphorura (Collembola: Onychiuridae) from the east of European Russia. Zootaxa 4965 (1): 114-128, DOI: 10.11646/zootaxa.4965.1.5
038287F67F62FFF5FD9840D6FB6B123E.taxon	diagnosis	Diagnosis. A species of the genus Psyllaphorura, which can be distinguished from the congeners due to the presence of 30 / 010 / 00123 dorsal pso (3 + 3 cephalic pso are located outside of antennal bases in the form of two half-arches along the axial line) and PAO with 16 – 22 simple vesicles. It is also characterized by: mid-sized cuticular granulation, relatively distinct dorsal sensilla, AO with 5 papillae and 4 guard setae, Ant. IV with an elongated subapical organite, labium of AC - type, only Th. II with lateral ms, furcal remnant of usual shape typical of genus with 3 + 3 setae, retinaculum with 1 + 1 teeth and a long unguiculus with a broad basal lamella.	en	Shveenkova, Yulia B., Babenko, Anatoly B. (2021): Two new species of the genus Psyllaphorura (Collembola: Onychiuridae) from the east of European Russia. Zootaxa 4965 (1): 114-128, DOI: 10.11646/zootaxa.4965.1.5
038287F67F62FFF5FD9840D6FB6B123E.taxon	description	Description. Size 1.2 – 1.6 mm in females, 0.9 – 1.3 mm in males; holotype: 1.38 mm. Colour white. Habitus typical of the genus (Fig. 1), body ovoid, Abd. VI short with relatively small anal spines. Cuticular granulations not too coarse, with 9 – 11 cuticular granules around each pso on abdominal tip, and 11 – 13 granules between p 1 setae on Abd. V. Dorsal pseudocelli as 30 / 010 / 00123, 3 + 3 cephalic pso located outside antennal bases in two semi-arcs along axial line (Fig. 1). Psx invisible. Antennae club-like, clearly shorter than head diagonal. Antennal base distinctly marked. Ant. IV with unusually long subapical organite (Fig. 2), 2 – 3 thickened blunt sensilla laterally and 5 – 6 similar sensilla on its inner side, basolateral microsensillum set in line with proximal whorl of setae. AIIIO consisting of 5 cuticular papillae, two sensory rods, two smooth sensory clubs, 4 guard setae, and lateral microsensillum (Fig. 2). Ant. I – II with 10 and 13 – 14 setae respectively. PAO with 16 – 22 simple vesicles (Fig. 3). Labrum with 4 / 9 setae, maxillary outer lobe simple with two sublobal setae. Labium of AC type (sensillum on papilla A clearly thicker) with 7 long and 4 spiniform guards and 6 proximal setae (Fig. 4). Basomedian and basolateral fields of labium with 4 and 6 setae, respectively. Usually 5 + 5 postlabial setae present along ventral mid line (Fig. 5). Chaetotaxy plurichaetotic and usually not symmetrical, dorsal setae slightly differentiated: most setae blunt and rather thick (Figs. 1, 10), besides few pointed, thin and curved microsetae present on most terga, dorsal sensilla relatively distinct: 2 (1) / 021 / 222111, sensilla on Abd. VI located ventro-laterally on pleura (Figs. 1, 6). Seta d 0 on head present or absent. Th. I with up to 12 setae on each side. Only Th. II with a lateral microsensillum. Upper subcoxae of legs 1 – 3 prominent, with 6 (7) – 7 (6) – 7 (8) setae, respectively. Abd. IV with 1 – 3 unpaired or paired msetae, setae p 0 present also on both Abd. IV and V. Axial seta a 0 on Abd. VI slightly shorter than p 1 and a 2, seta a 2 about twice as long as a 1 (Fig. 1). Sterna of Th. I – III without setae along ventral line. Ventral chaetom on abdomen composed of pointed meso- and macrosetae (Figs. 5, 6). Furcal remnant as usual for genus: mucro absent, dens knob-like with 3 + 3 long setae, retinaculum present with 1 + 1 teeth (Fig. 7). Chaetotaxy of furcal field in adults highly variable and usually not symmetric: in largest specimens 3 – 4 irregular rows of manubrial setae present posteriorly to dental remnant. VT with 8 – 9 distal setae on each side and without proximal setae at base (Fig. 8). Tibiotarsi with complete distal whorl (7 A + 4 T), 7 – 7 – 6 setae in B-whorl, M seta present, C-whorl variable. Unguis toothless, unguiculus as long or slightly longer than inner edge of unguis, with wide basal lamella (Fig. 9). Upper anal valve with setae a 0, 2 a 1, 2 a 2, 2 b 1, c 0, 2 c 1, 2 c 2, each lateral valve with setae a 0 and 2 a 1 (Fig. 6). AS short and conical, about as long as papillae.	en	Shveenkova, Yulia B., Babenko, Anatoly B. (2021): Two new species of the genus Psyllaphorura (Collembola: Onychiuridae) from the east of European Russia. Zootaxa 4965 (1): 114-128, DOI: 10.11646/zootaxa.4965.1.5
038287F67F62FFF5FD9840D6FB6B123E.taxon	etymology	Etymology. The species is named after its ecological preferences, i. e. different types of forest habitats. Affinities. Psyllaphorura silvestris sp. nov. shares the presence of 3 + 3 anterior cephalic pso with only three known congeners (see Table 1), namely P. obesa, P. altaica and P. pseudopodis sp. nov., the latter species described below. Among them only in P. obesa the position of these pso is the same as in P. silvestris sp. nov., namely in the form of two separate half-arcs outside of the bases of the antennae along the midline of the head (OR-pattern, see below). Contrary, in both P. altaica and P. pseudopodis sp. nov. cephalic pso are located in a common axial group. There are also some additional similarities between P. silvestris sp. nov. and P. obesa, for instance, the presence of thoracic pso (absent in all other congeners) or rather long unguiculus with a distinct basal lamella. Despite all these similarities P. silvestris sp. nov. and P. obesa can be easily distinguished by pso formulas (30 / 010 / 00123 pso in the former vs 30 / 011 (0) / 00023 in the latter) and the shape of PAO vesicles (simple in P. silvestris sp. nov. vs compound in P. obesa). Psyllaphorura silvestris sp. nov. is characterized by two probably unique traits that are not mentioned for all other known congeners, namely the absence of lateral microsensillum on Th. III and an unusually long subapical organite on Ant. IV.	en	Shveenkova, Yulia B., Babenko, Anatoly B. (2021): Two new species of the genus Psyllaphorura (Collembola: Onychiuridae) from the east of European Russia. Zootaxa 4965 (1): 114-128, DOI: 10.11646/zootaxa.4965.1.5
038287F67F62FFF5FD9840D6FB6B123E.taxon	distribution	Distribution. Apparently, the new species is widespread in the forest belt of the East-European part of Russia where it mainly inhabits riparian forests, as well as in the entrance of caves and their environs.	en	Shveenkova, Yulia B., Babenko, Anatoly B. (2021): Two new species of the genus Psyllaphorura (Collembola: Onychiuridae) from the east of European Russia. Zootaxa 4965 (1): 114-128, DOI: 10.11646/zootaxa.4965.1.5
038287F67F60FFF0FD9845A6FBA31356.taxon	description	Figs 11 – 19	en	Shveenkova, Yulia B., Babenko, Anatoly B. (2021): Two new species of the genus Psyllaphorura (Collembola: Onychiuridae) from the east of European Russia. Zootaxa 4965 (1): 114-128, DOI: 10.11646/zootaxa.4965.1.5
038287F67F60FFF0FD9845A6FBA31356.taxon	materials_examined	Type material. Russia: holotype, female, European part, Middle Volga River Basin, Penza Region, “ Privolzhskaya Lesostep ” State Nature Reserve, middle reaches of Kadada River, near Shatkino settlement, Alnus glutinosa floodplain forest [N 52.9322 °, E 46.3022 °], soil, 15.09.2017, Yu. Shveenkova leg. Paratypes: 4 males and 5 females, same data as holotype; 1 male, ibid., but 10.10.19; 1 female, ibid., but 18.09.20, Yu. Shveenkova leg. The types are kept in the collection of MSPU.	en	Shveenkova, Yulia B., Babenko, Anatoly B. (2021): Two new species of the genus Psyllaphorura (Collembola: Onychiuridae) from the east of European Russia. Zootaxa 4965 (1): 114-128, DOI: 10.11646/zootaxa.4965.1.5
038287F67F60FFF0FD9845A6FBA31356.taxon	diagnosis	Diagnosis. A species of the genus Psyllaphorura, which can be distinguished from the congeners due to the presence of 30 / 000 / 00003 dorsal pso (3 + 3 cephalic pso are located as a common axial group on the median part of the head), only 2 + 2 dental setae and a pair of ventral swellings on Abd. IV. It is also characterized by coarse dorsal granulation, rather distinct dorsal sensilla, AO with 5 papillae and 4 guard setae, PAO with 12 – 15 simple vesicles, labium of AC - type, the presence of lateral ms on both Th. II – III, rather short unguiculus and the absence of retinaculum.	en	Shveenkova, Yulia B., Babenko, Anatoly B. (2021): Two new species of the genus Psyllaphorura (Collembola: Onychiuridae) from the east of European Russia. Zootaxa 4965 (1): 114-128, DOI: 10.11646/zootaxa.4965.1.5
038287F67F60FFF0FD9845A6FBA31356.taxon	description	Description. Size: 1.0 – 1.2 mm in females, 0.87 – 0.97 mm in males, holotype: 1.06 mm. Colour white. Habitus typical of the genus (Fig. 11), body ovoid with a short Abd. VI armed by small anal spines. Cuticular granulation very coarse, especially in middle parts of terga, with 8 – 9 cuticular granules around each abdominal pso and only 5 – 6 granules between p 1 setae on Abd. V. Dorsal pseudocelli as 30 / 000 / 00003, 3 + 3 cephalic pseudocelli located on head front in the form of a single “ Vshaped ” complex (Fig. 11). Psx invisible. Antennae club-like, distinctly shorter than head diagonal. Small area of antennal bases clearly marked with finer granulation. Ant. IV with small, peg-like subapical organite, 3 curved blunt sensilla laterally and up to 8 sensilla on its inner side, basolateral microsensillum present in line with proximal whorl of setae (Fig. 13). AIIIO typical, with 5 cuticular papillae, 4 guard setae, two sensory rods, two smooth sensory clubs and lateral microsensillum (Fig. 13). Ant. I – II with 10 and 13 – 14 setae, respectively. PAO with 12 – 15 simple vesicles. Labrum with 4 / 9 setae (Fig. 17), maxillary outer lobe simple with two sublobal setae. Labium of AC type (sensillum on papilla A clearly thicker) with 7 long and 4 spiniform guards and 6 proximal setae (Fig. 16). Basomedian and basolateral fields of labium with 4 and 6 setae, respectively. Usually 4 + 4 postlabial setae present along ventral midline (Fig. 12). Chaetotaxy plurichaetotic and usually not symmetrical, dorsal setae weakly differentiated (Fig. 11). Most dorsal sensilla relatively distinct, but masked by coarse granulations, 2 / 021 / 221121 (0) in number, sensilla on Abd. VI, if present, located ventro-laterally on pleura. The presence / absence of dorsal seta d 0 on head often obscure due to chaetotic asymmetry. Th. I with up to 17 setae on each side set in two irregular rows. Both Th. II and Th. III with lateral microsensillum. Upper subcoxae prominent on all legs with up to 10 setae. Chaetotaxy of Abd. IV very plurichaetotic, axial m-setae present or absent. Abd. V with seta p 0. Axial seta a 0 on Abd. VI about as long as p 1 and a 2 setae, seta a 1 shorter than a 2 (~ 0.7: 1). Sterna of Th. I – III without setae along ventral line. Ventral chaetom on abdomen composed of pointed meso- and macrosetae (Fig. 14). Furcal remnant without mucro, dens knob-like with 2 + 2 long setae, retinaculum absent. Chaetotaxy of furcal field in adults highly variable and usually not symmetric: in largest specimens 2 – 3 irregular rows of manubrial setae present posterior to dental remnant. VT with 7 (8) distal setae on each side and without proximal setae at base. Sternum of Abd. IV on each side of furcal remnant with two specific protuberances covered with modified (long and thin) cuticular granules (Figs. 14, 18, 19). Tibiotarsi with a complete distal whorl (7 A + 4 T), 7 – 7 – 6 setae in B - whorl, M seta present, C-whorl variable. Unguis toothless, unguiculus about as long as half of inner edge of unguis (Fig. 15). Upper anal valve with setae a 0, 2 a 1, 2 a 2, 2 b 1, c 0, 2 c 1, 2 c 2, each of lateral valve with setae a 0 and 2 a 1 (Fig. 14). AS short and conical, about as long as papillae.	en	Shveenkova, Yulia B., Babenko, Anatoly B. (2021): Two new species of the genus Psyllaphorura (Collembola: Onychiuridae) from the east of European Russia. Zootaxa 4965 (1): 114-128, DOI: 10.11646/zootaxa.4965.1.5
038287F67F60FFF0FD9845A6FBA31356.taxon	etymology	Etymology. The species name is derived from the unique ventral swellings located on the fourth abdominal segment, which is somewhat reminiscent of pseudopodia. Affinities. In having 3 + 3 cephalic pso arranged in a single group on the median part of the head, Psyllaphorura pseudopodis sp. nov. is the most similar to P. altaica, which has recently been described from southern Siberia. P. pseudopodis sp. nov. can be easily distinguished from the latter species by the absence of pso on Abd. IV (P. altaica has 00013 abdominal pso), only 2 + 2 dental setae (vs 3 + 3 setae in P. altaica) and a shorter unguiculus (~ 0.5 – 0.6 UIII vs 0.8 UIII in P. altaica). The only other congener with not 3 + 3, but 2 + 2 setae on the furcal knobs as in P. pseudopodis sp. nov., is P. bashkirica (Khanislamova, 1986), described from a more easterly region (at a distance of ~ 700 km). Although the description of the latter species does not fully correspond to modern standards and clearly requires verification, its conspecificity with the new species is unlikely. These species clearly differ by the number of dorsal pso (5 / 000 / 00023 in P. bashkirica vs 3 / 000 / 00003 pso in the new species), structure of PAO (15 – 17 divided vesicles in P. bashkirica vs 12 – 15 simple vesicles in P. pseudopodis sp. nov.), the number of dorsal sensilla (? /? 11 / 11112?, sensilla on Th. III in medial position in P. bashkirica vs 2 / 021 / 221120 (1), sensilla on Th. III in lateral position in the new species) and guard setae in AIIIO (5 setae in P. bashkirica vs 4 setae in P. pseudopodis sp. nov.). P. pseudopodis sp. nov. is also characterized by one unique feature, namely the development of a pair of ventral swellings on the fourth abdominal segment, which seem to have never been observed in any other species of Collembola. These swellings are covered with modified cuticular granules, representing a structure of unknown origin with a duct system or a hole inside visible under them.	en	Shveenkova, Yulia B., Babenko, Anatoly B. (2021): Two new species of the genus Psyllaphorura (Collembola: Onychiuridae) from the east of European Russia. Zootaxa 4965 (1): 114-128, DOI: 10.11646/zootaxa.4965.1.5
038287F67F60FFF0FD9845A6FBA31356.taxon	distribution	Distribution and ecology. The species has only been registered at the type locality.	en	Shveenkova, Yulia B., Babenko, Anatoly B. (2021): Two new species of the genus Psyllaphorura (Collembola: Onychiuridae) from the east of European Russia. Zootaxa 4965 (1): 114-128, DOI: 10.11646/zootaxa.4965.1.5
