Australosagola helenae ( Oke, 1925 ), 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.15930429
persistent identifier	https://treatment.plazi.org/id/F59EED14-4715-5D0D-8616-5A59FCA16FEF
treatment provided by	ZooKeys by Pensoft
scientific name	Australosagola helenae ( Oke, 1925 )
status	comb. nov.

Treatment

Australosagola helenae ( Oke, 1925) comb. nov.

Figs 1 D View Figure 1 , 2 C View Figure 2 , 5 View Figure 5 , 14 View Figure 14

Sagola helenae Oke, 1925: 7. Type locality: Evelyn, Victoria. Holotype male ( MVMA). Chandler 2001: 52. View in CoL

Type material.

Holotype. Australia: Australian Capital Territory: • ♂ ( MVMA), “ Evelyn . V. / s. 6.22 / C. Oke // Sagola / helenae / ♂ Oke // 1059 / Type ♂ // MUS VIC. / ENTO 2015-1 L ”.

Other material examined

(n = 30; 17 ♂♂, 13 ♀♀). See Suppl. material 1.

Diagnosis.

Australosagola helenae comb. nov. can be distinguished from other Australosagola by the following characters: abdominal sternite 5 (VII) with small median, preapical tubercle (Fig. 5 E View Figure 5 , white arrow), lacking preapical setal rows (Fig. 5 E, K View Figure 5 ).

Male description.

Length 2.2–2.7 mm. Body brown to reddish-brown. Head. Head in dorsal view with concavity at base of frontal rostrum around frontal fovea. Vertexal foveae well-developed (Fig. 5 C, H View Figure 5 ). Antennomere 1 cylindrical and longer than wide; 2 subquadrate and longer than wide; 3 smallest and subconical; 4–7 subquadrate, longer than wide, swollen at middle; 8 subquadrate, as long as wide; 9 and 10 subquadrate and transverse (Fig. 5 A, G View Figure 5 ). Thorax. Prothorax slightly broader than long, widest at midpoint (Fig. 5 I View Figure 5 ). 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 ventral margin convex (Fig. 5 E, J View Figure 5 ). Abdomen. Abdominal tergite 2 (V) ~ 1 / 2 length of 3 (VI) (Fig. 1 D View Figure 1 ). Abdominal sternite 5 (VII) slightly medially impressed (Fig. 5 E View Figure 5 ). Genitalia. Length 0.32 mm, aedeagus symmetrical, apex of median lobe rounded and bulbous in ventral and basoventral views (Fig. 5 L – N View Figure 5 ). Pair of edentate projections at midpoint of median lobe longer than parameres and not curved at apices in basoventral and lateral views, shortly curved in ventral view (Fig. 5 L, M View Figure 5 ). Pair of tubercles dorsal to projection [Fig. 5 L View Figure 5 (black arrow), N (black arrow)]. Hook-shaped projection at basal part of median lobe only slightly curved in lateral view, projection appearing to be M-shaped and directed apically at basal part of median lobe in ventral view, phallobase narrowly rounded at apex in ventral view, shortly bent in lateral view (Fig. 5 L – N View Figure 5 ).

Female sexual characters.

Abdominal sternites convex, apical portion of abdominal sternite 5 (VII) convex (Fig. 5 F View Figure 5 ).

Comment.

Australosagola helenae and A. jiwooki sp. nov. are the only species that have males with a small, median, preapical tubercle on abdominal sternite 5 (VII) [Figs 5 E View Figure 5 (white arrow), K (white arrow), 8 H (white arrow)], while A. helenae is separated from A. jiwooki by the lack of the pair of setal clusters at the apex of the median projection at the posterior margin (Figs 5 K View Figure 5 , 8 H View Figure 8 , black arrow).

Distribution.

New South Wales, Victoria, and the Australian Capital Territory (Fig. 14 View Figure 14 , black hexagons).

Habitat.

Specimens of this species were collected using flight intercept traps (F. I. T.), spraying pyrethrin on logs, and by sifting leaf, log or forest floor litter in mallee, woodland, or most commonly in wet sclerophyll forests dominated by Nothofagus cunninghami and Eucalyptus species.