Omaliopsis hlavaci Shavrin 2023, sp. n.
Creators: name: Shavrin, Alexey V.
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Staphylinidae
Omaliopsis
Omaliopsis hlavaci

description: Omaliopsis hlavaci sp. n.
(Figs 2, 17–24)
Type material. Holotype ♂ (Fig. 2): ‘ China, N Sichuan | Jiuzhaigou env., | 中查村Zhongchacun | 33°17’13’’N 103°50’1’’E | 9.-13.VII.2017, 2400-3000m | lgt. Ondřej Konvička’ <printed>, ‘HOLOTYPE | Omaliopsis | hlavaci sp. n. | Shavrin A.V. des. 2023’ <red, printed> (NMPC).
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. 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). Posterior margin of abdominal tergite VIII widely emarginate (Fig. 21). 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). Lateral aspect of the aedeagus as in Fig. 19.
Female. Posterior margins of abdominal tergite VIII (Fig. 22) and sternite VIII (Fig. 23) rounded. Female accessory sclerite leaf-shaped, with wide basal portion gradually narrowed toward widely rounded apex (Fig. 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).
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.
description: Published as part of Shavrin, Alexey V., 2023, Four new species of the genus Omaliopsis Jeannel, 1940 (Coleoptera: Staphylinidae: Omaliinae: Omaliini) of China, pp. 446-460 in Zootaxa 5380 (5) on pages 452-453, DOI: 10.11646/zootaxa.5380.5.2, http://zenodo.org/record/10254532