Omaliopsis hlavaci, Shavrin, 2023

Shavrin, Alexey V., 2023, Four new species of the genus Omaliopsis Jeannel, 1940 (Coleoptera: Staphylinidae: Omaliinae: Omaliini) of China, Zootaxa 5380 (5), pp. 446-460 : 452-453

publication ID	https://doi.org/ 10.11646/zootaxa.5380.5.2
publication LSID	lsid:zoobank.org:pub:76CC750C-19F2-4308-94B2-3DB61BC13E3F
DOI	https://doi.org/10.5281/zenodo.10254534
persistent identifier	https://treatment.plazi.org/id/03A787C8-E91A-4203-CF96-4E8B14FEA430
treatment provided by	Plazi
scientific name	Omaliopsis hlavaci
status	sp. nov.

Treatment

Omaliopsis hlavaci sp. n.

( Figs 2 View FIGURES 1–4 , 17–24 View FIGURE 17 View FIGURES 18–24 )

Paratypes (4 ♂♂, 5 ♀♀): 2 ♂♂, 2 ♀♀: same data as the holotype (1 ♂, 1 ♀: cH; 1 ♀: cSh; 1 ♀: NMPC); 2 ♂♂ (one specimen dissected), 2 ♀♀ (one specimen dissected): ‘ CHINA, N Sichuan | Jiuzhaigou env., Zhongchacun | 33°17’13’’N 103°50’1’’E | 9.-13.VII.2017, 2400-3000m | lgt. Ondřej Konvička’ <printed> (1 ♂: cSh; 1 ♂, 2 ♀♀: cH); 1 ♀: ‘ CHINA: N-Sichuan [CH12-26] | 70 km N Songpan, road S 301, above | Gan lake, 33°15’26’’N, 103°46’03’’E, | 2700 m, spruce forest with birch, | litter, mushrooms, moss, and dead | wood sifted, 12.VIII.2012, M. Schülke’ <printed>, ‘Museum für Naturkunde | Berlin | Sammlung M. Schülke’ <printed> (cSch). All paratypes with additional red printed label: ‘ PARATYPE | Omaliopsis | hlavaci sp. n. | Shavrin A.V. des. 2023’.

Description. Measurements (n=10): HW: 0.44–0.49; HL: 0.29–0.34; OL: 0.12–0.13; TL: 0.04–0.05; AL (holotype): 0.66; PL: 0.36–0.39; PW: 0.57–0.62; ESL: 0.71–0.79; EW: 0.71–0.83; MTbL (holotype): 0.34; MTrL (holotype): 0.18 (MTrL 1–4: 0.06; MTrL 5: 0.12); AW: 0.68–0.77; AedL: 0.50; BL: 1.95–2.75 (holotype: 2.10).

Habitus as in Fig. 2 View FIGURES 1–4 . Body reddish-brown to dark brown; antennomeres 7–11 brown; lateral and basal portions of pronotum, basal, latero-apical and lateral portions of elytra, paratergites, apical margins of abdominal tergites and legs yellowish; moutpharts and tarsi yellow (some paratypes with paler elytra, two paratypes with oblique elongate and wide brownish spots on each elytron; abdomen of two paratypes entirely yellowish). Punctation of head irregular, moderately sparse, denser and larger in middle portion, finer and sparser on infraorbital portions; punctation of pronotum sparser about as that in middle portion of head, finer and sparser in medioapical and mediobasal portions; punctation of elytra about as that on pronotum, finer and sparser around scutellum, slightly coarser in middle, finer and sparser along suture. Head with distinct dense microreticulation, finer in anterior portion and coarser in middle; pronotum with very dense transverse microsculpture, finer and sometimes indistinct in mediobasal portion.

Head 1.4–1.5 times as broad as long, with distinctly elevated middle portion, with moderately wide and deep anteriomedian depression and with very short and deep anteocellar foveae, about as long as diameter of ocellus or somewhat longer. Antennomere 3 about as long as and distinctly narrower than 2, 4 about twice shorter than 3, 5 slightly shorter and broader than 4, 6 distinctly broader than 5, 7–8 distinctly broader than 6, 9–10 slightly longer than 8, apical antennomere slightly more than twice as long as 10, from middle gradually narrowed apicad toward rounded or subacute apex.

Pronotum 1.2–1.4 times as broad as head, widest in about middle; surface of disc with two moderately wide and deep short depressions, larger and deeper in mediobasal portion; laterobasal portions deeple impressed.

Elytra about as long as broad or slightly broader and about twice as long as pronotum.

Metatarsi slightly less than twice as long as metatibia.

Abdomen indistinctly narrower than elytra.

Male. Posterior margin of abdominal tergite VIII truncate ( Fig. 20 View FIGURES 18–24 ). Posterior margin of abdominal tergite VIII widely emarginate ( Fig. 21 View FIGURES 18–24 ). Aedeagus with moderately wide basal potion, gradually narrowed toward rounded apex; parameres narrow, almost reaching apex of median lobe; internal sac long and wide, with two pairs of elongate sclerites in about middle portion and with narrow moderately short flagellum between them ( Fig. 18 View FIGURES 18–24 ). Lateral aspect of the aedeagus as in Fig. 19 View FIGURES 18–24 .

Female. Posterior margins of abdominal tergite VIII ( Fig. 22 View FIGURES 18–24 ) and sternite VIII ( Fig. 23 View FIGURES 18–24 ) rounded. Female accessory sclerite leaf-shaped, with wide basal portion gradually narrowed toward widely rounded apex ( Fig. 24 View FIGURES 18–24 ). Spermatheca not recognized.

Comparative notes. Based on the general shapes of the convex forebody and the aedeagus, and the lack of postocular ridges, O. hlavaci sp. n. is similar to O. fraterna sp. n., O. obliquesignata sp. n. and O. smetanai sp. n. From O. fraterna sp. n. and O. smetanai sp. n. it differs by the slightly shorter elytra. Additionally, from O. smetanai sp. n. it differs by the denser pucntation of the head and the pronotum. From O. obliquesignata sp. n. it differs by the narrower and darker elytra with the presence of pale lateroapical maculae. From all these species it can be distinguished by the darker coloration of the forebody, slightly shorter pronotum and slightly longer parameres, details of the structure of the internal sac, and the shape of the female accessory sclerite. For additional details see the key below.

Distribution. Omaliopsis hlavaci sp. n. is known from two locations in northern Sichuan, China ( Fig. 17 View FIGURE 17 ).

Etymology. The new species is named after my friend and colleague Peter Hlaváč (Prague), well known specialist in taxonomy of Staphylinidae and Curculionidae .

Bionomics. Specimens were collected at elevations from 2400 to 3000 m a.s.l. The ones from Gan Lake were sifted from forest litter, mushrooms, mosses and dead wood in forest with Picea and Betula .