Omaliopsis schmidti Shavrin, 2019

Shavrin, Alexey V., 2019, Three new species and a new combination in the genus Omaliopsis Jeannel, 1940 (Coleoptera: Staphylinidae: Omaliinae: Omaliini) of China and Nepal, Zootaxa 4603 (2), pp. 354-364 : 362-363

Omaliopsis schmidti Shavrin , sp.n.

( Figs. 4 , 11–12 , 20–22 )

Type material examined: Holotype Ƌ [specimen dissected]: ‘ NEPAL, Manaslu Mts. | N slope, above Prok | 28°30’N, 84°49’E | 2950–3400m, 27.V. | 2006.leg. J.Schmidt’ <rectangular label, printed >, ‘ HOLOTYPE | Omali- opsis | schmidti sp.n. | Shavrin A.V. des. 2019’ <red rectangular label, printed> ( NME) .

Paratypes: 1 ♀: same data as the holotype ( NME); 1 Ƌ [specimen dissected]: ‘ NEPAL 15km S Kath- | mandu, Godawari-Phul-| choki 1800–2200m 25. VI . | 1997 leg. A. Weigel KL’ <rectangular label, printed> ( CS). All para- types with additional red rectangular printed label : ‘ PARATYPE | Omaliopsis | schmidti sp.n. | Shavrin A.V. des. 2019’.

Description. Measurements (n=3): HW: 0.52–0.57; HL: 0.35–0.39; AL: 0.64; OL: 0.15–0.17; TL: 0.03–0.05; PL: 0.47–0.52; PW: 0.67–0.70; ESL: 0.81–0.89; EW: 0.81–0.87; AW: 0.75–0.81; MTbL (holotype): 0.43; MTrL (holotype): 0.23 (MTrL 1–4: 0.08; MTrL 5: 0.15); AedL: 0.48–0.50; BL: 3.15 (holotype)–3.54. Habitus as in Fig. 4 .

Body yellow-brown to reddish-brown, with somewhat darker head; mouthparts, antennomeres 1–5, laterobasal and basal portions of pronotum, lateral margins and laterobasal portions of elytra in some specimens, legs and apical margins of abdominal tergites (paratypes) yellow; antennomeres 6–11 yellow-brown to brown. Punctation of head irregular, small and deep, sparser on anterior portion, between ocelli and posterior parts of infraorbital ridges; neck with small and dense punctation; punctation of pronotum as that on head, but markedly denser, sparser on apical and basal portions and sometimes on mediobasal third, distance between punctures on middle as the diameter of one or two punctures; scutellum without punctation or with several very small punctures; punctation of elytra dense, slightly larger and deeper than that of pronotum, smaller and sparser on basal portion and near scutellum; abdominal tergites with small and very sparse punctation. Middle portion of head with indistinct transverse and infraorbital ridges with cellular microsculpture; middle portion of pronotum with distinct transverse microsculpture, sometimes mesh-like between punctures; abdomen with distinct cellular microsculpture.

Head trapezium-shaped, 1.4 times as broad as long, with distinctly elevated middle portion and moderately short temples, with narrow deep grooves in front of ocelli, reaching level of posterior margins of pronotum; anteriolateral portions of head slightly depressed. Distance between ocelli about as long as distance between ocellus and posterior margin of eye or slightly shorter. Palpomere IV of maxillary palps about two and half times as long as penultimate segment. Antennomeres with lengths × widths (holotype): 1: 0.10 × 0.06; 2: 0.07 × 0.05; 3: 0.06 × 0.04; 4: 0.05 × 0.04; 5: 0.05 × 0.05; 6–7: 0.04 × 0.06; 8–9: 0.04 × 0.07; 10: 0.05 × 0.07; 11: 0.10 × 0.07.

Pronotum 1.3–1.4 as broad as long, widest in anterior third, rounded anteriad and gradually narrowing posteriad; laterobasal margins deeply depressed; surface of disc with two indistinct wide longitudinal depressions.

Elytra about as long as wide, 1.7 times as long as pronotum; middle part of disc of each elytron with slightly, longitudinally elevated surface between punctures.

Posterior tarsi less than twice as short as metatibia.

Male. Protarsomeres 1–4 distinctly widened. Apical margin of abdominal tergite VIII ( Fig. 11 ) straight. Medioapical part of abdominal sternite VIII ( Fig. 12 ) with pair of short teeth; apical margin deeply emarginated. Aedeagus ( Fig. 20 ) with very wide basal portion gradually narrowing toward narrowly arcuate apex; parameres indistinctly exceeding apex of median lobe, rounded apicad, with two apical and two preapical elongate setae, with several very narrow setae on inner apical margin forming brush, and with several very short setae along inner edge of median part of each paramere; internal sac very long, with two lateral and mediobasal fields of thorns. Aedeagus laterally as in Fig. 21 .

Female. Protarsomeres 1–4 narrow. Apical margins of abdominal tertgite and sternite VIII straight.

Comparative notes. Based on the coloration, punctation and microsculpture of the forebody, O. schmidti sp.n. is similar to Indian O. himalayica , from which it differs by the smaller body, narrower preapical antennomere, shorter apical maxillary palpomere and by the less transverse pronotum with wider anterior third.

Distribution. The new species is at present known from the vicinity of Kathmandu and Manaslu range in Central Nepal ( Fig. 22 ).

Bionomics. Specimens were collected at elevations 1800 to 3400 m a.s.l. The detailed ecological data are unknown.

Etymology. Eponymic, the species is named in honour of collector of two types, carabidologist Joachim Schmidt (Rostock, Germany).

Figures

FIGURE 22. Distribution of Omaliopsis in Asia: O. amplimaculata sp.n (white circle), O. bimaculata sp.n. (black circle), O. himalayica (Cameron, 1924) (black square), O. musaphila (Rougemont, 2017) (white square), O. schmidti sp.n. (black triangle).

FIGURES 1–4. Habitus of Omaliopsis: 1–O. amplimaculata sp.n. (holotype), 2—O. bimaculata sp.n. (paratype), 3—O. musaphila (Rougemont, 2017) (China: Jinggangshan), 4—O. schmidti sp.n. (paratype). Scale bar: 1.0 mm.

FIGURES 5–12. Abdominal segments of males of Omaliopsis (5–6—O. amplimaculata sp.n., 7–8—O. bimaculata sp.n., 9–10—O. musaphila (Rougemont, 2017), 11–12—O. schmidti sp.n.): 5, 7, 9, 11—tergite VIII (dorsal view), 6, 8, 10, 12—sternite VIII (ventral view). Scale bar: 0.1 mm.

FIGURES 18–21. Aedeagus of Omaliopsis (18–19—O. musaphila (Rougemont, 2017), 20–21—O. schmidti sp.n. (paratype)): 18, 20—parameral view, 19, 21—lateral view. Scale bar: 0.1 mm.