Australosagola rugicornis ( Oke, 1932 ), 2025

Choi, Su-Ho, Chandler, Donald S. & Park, Jong-Seok, 2025, Australosagola, a new genus of pselaphine beetles from southern Australia (Coleoptera, Staphylinidae, Pselaphinae, Faronitae) with descriptions of seven new species, ZooKeys 1245, pp. 177-205 : 177-205

publication ID	https://doi.org/10.3897/zookeys.1245.151556
publication LSID	lsid:zoobank.org:pub:C4112641-FC74-4967-AC60-198EF5E7E381
DOI	https://doi.org/10.5281/zenodo.15930423
persistent identifier	https://treatment.plazi.org/id/2542BC8C-F5C8-5B25-9EBA-37B5D7CADDF6
treatment provided by	ZooKeys by Pensoft
scientific name	Australosagola rugicornis ( Oke, 1932 )
status	comb. nov.

Treatment

Australosagola rugicornis ( Oke, 1932) comb. nov.

Figs 1 C View Figure 1 , 2 B View Figure 2 , 4 View Figure 4 , 13 View Figure 13

Sagola rugicornis Oke, 1932: 149, fig. 3. Type locality: Warburton, Mt. Donna Buang, Victoria. Holotype male ( MVMA). Chandler 2001: 52, figs 32, 196, both A. tasmaniae. View in CoL

Type material.

Holotype. Australia: Victoria: • ♂ ( MVMA), “ WARBURTON , Vic. / 18.2.81 / C. OKE. 4088 ’ // 1081 Type ♂ // MUS. VIC. ENTO 2015-1 L ”.

Other material examined

(n = 23; 9 ♂♂, 14 ♀♀). See Suppl. material 1.

Diagnosis.

Adult specimens of A. rugicornis comb. nov. can be separated from other species in Australosagola by the distinct form of antennomeres with antennomeres 4–8 being strongly constricted at their middle (Fig. 4 A, B, G View Figure 4 ).

Male description.

Length 2.8–3.3 mm. Body reddish-brown. Head. Head in dorsal view with large impression at base of frontal rostrum around frontal fovea. Vertexal foveae well-developed (Fig. 4 C, H View Figure 4 ). Antennomere 1 subconical and longer than wide, slightly curved; 2 rounded and transverse; 3 smallest and subconical, slightly constricted at middle; 4–8 distinctly constricted at middle and as long as wide; 9 and 10 distinctly constricted at middle and transverse (Fig. 4 A, G View Figure 4 ). Thorax. Prothorax slightly broader than long, widest at midpoint (Fig. 4 I View Figure 4 ). Elytra with two subbasal elytral foveae, three basal elytral foveae (1 being fovea at base of sutural stria), discal elytral foveae with short discal striae, and fovea in sutural striae. Hind wings fully developed. Metatrochanter with angulate ventral margin (Fig. 4 E, J View Figure 4 ). Abdomen. Abdominal sternites 4 and 5 (VI – VII) both strongly impressed medially (Fig. 4 E View Figure 4 ). Abdominal sternite 5 (VII) with large lateral preapical and apical rows of setae at middle (Fig. 4 E, K View Figure 4 ). Genitalia. Length 0.57 mm, aedeagus symmetrical, with pair of long dentate projections near midpoint of median lobe, projections curved medially at apices in basoventral view (Fig. 4 M View Figure 4 ) and acutely pointed in lateral view (Fig. 4 N View Figure 4 ). Projections at basal part of median lobe strongly curved apically (Fig. 4 L, M View Figure 4 ).

Female sexual characters.

Antennomere 1 stout, subconical and longer than wide; 2 transverse and subquadrate; 3 smallest, subconical and slightly transverse; 4 and 5 distinctly constricted at middle and as long as wide; 6–9 distinctly constricted at middle and transverse; 10 slightly constricted at middle and transverse (Fig. 4 B View Figure 4 ). Metatrochanter with ventral margin convex (Fig. 4 F View Figure 4 ). Abdominal sternites 4 and 5 (VI – VII) convex, lacking thick setae at apex of abdominal sternite 5 (VII; Fig. 4 F View Figure 4 ).

Comments.

The aedeagi of A. rugicornis and A. tasmaniae comb. nov. are similar, but the aedeagus of A. rugicornis is notably larger (length of A. tasmaniae aedeagus 0.37 mm, for A. rugicornis it is 0.57 mm) (Figs 3 O – Q View Figure 3 , 4 L – N View Figure 4 ), and the projections from the midpoint of the median lobe are longer and differently formed for A. tasmaniae (Figs 3 P View Figure 3 (white arrow), Q (white arrow), 4 M, N). The temples of A. tasmaniae are rounded, whereas those of A. rugicornis are angular (Figs 3 I View Figure 3 , 4 H View Figure 4 ). Additionally, the setal cluster on abdominal sternite 5 (VII) is medially open in A. rugicornis , whereas it is complete in A. tasmaniae (Figs 3 N View Figure 3 , 4 K View Figure 4 ).

Distribution.

Victoria and New South Wales (Fig. 13 View Figure 13 , red triangles).

Habitat.

Specimens of this species were collected using flight intercept traps (F. I. T.), by sifting leaf, log, and forest floor litter, and found in debris under a rock in Eucalyptus forests, or by spraying pyrethrin on Eucalyptus logs. Taken primarily in Nothofagus cunninghami and Eucalyptus regnans wet sclerophyll forests.