Deinopteroloma spinigerum Peng & L.-Z. Li

Cheng, Zhi-Fei, Tang, Liang, Li, Li-Zhen & Peng, Zhong, 2019, New species and new records of the genus Deinopteroloma Jansson, 1946 (Coleoptera, Staphylinidae, Omaliinae) from China, ZooKeys 846, pp. 55-64 : 60-63

Deinopteroloma spinigerum Peng & L.-Z. Li sp. n. (Figs 4, 8)

Type material.

Holotype ♂: China: Hunan Prov., Yizhang County Mangshan N. R., 24°56'26"N, 112°59'18"E, 26.IV.2017 1400 m, Peng, Tu & Zhou leg. / Holotypus ♂ Deinopteroloma spinigerum sp. n., det. Peng & Li, 2019 (SNUC).

Description.

Measurements (in mm) and ratios: BL 4.39, FL 3.89, HL 0.57, HW 0.91, AnL 1.61, PL 0.89, PW 1.33, EL 2.34, EW 1.81, AL 1.13, HL/HW 0.63, HW/PW 0.68, HL/PL 0.64, PL/PW 0.67, EL/EW 1.29.

Habitus as in Fig. 4A. Coloration: Body dark-brown; pronotum with broadly dark-yellowish lateral margins; each elytron with three yellowish-brown tubercles; antenna with antennomeres I–IV light-brown and V–VI gradually more infuscate apically, VII–XI blackish brown; maxillary palpi dark-yellowish.

Head transverse; posterior part of clypeus and vertex moderately elevated, with indistinct lateral impressions in middle part and weak impression in front of ocelli, infraorbital ridges impressed; eyes large and convex; small acute postocular ridge situated away from posterior margin of eye; ocelli large; frons smooth and glossy; antennomeres I–VIII and XI longer than broad; antennomeres IX–X as long as broad; measurements of antennomeres (length): I: 0.17; II: 0.10; III: 0.12; IV–V: 0.11; VI: 0.07; VII: 0.10; VIII–X: 0.08; XI: 0.14.

Pronotum distinctly transverse; lateral margins finely crenulate and with somewhat irregular outline; lateral portions indistinctly impressed; disc of pronotum with wide, very convex middle elevation and with distinct longitudinal impression; punctation coarse, dense in posteromedian portions, rather sparser in anteromedian and lateral portions, and irregular and scattered in median portion.

Elytra without distinct longitudinal ridges; punctation coarse and arranged in partly irregular series (except in posterior portion of elytra); each elytron with approximately three smooth tubercles. Hind wings probably present.

Male. Abdominal sternites III–VII unmodified; sternite VIII (Fig. 4B) distinctly transverse, posterior margin weakly concave in the middle; aedeagus as in Fig. 4C, D, both parameres with small hook-shaped apex, weakly asymmetric and slender, slightly extending apex of median lobe; internal sac with three sclerotized spines.

Female.

Unknown.

Comparative notes.

As can be inferred from the similar morphology of the aedeagus, the new species is allied to D. tricuspidatum Smetana, 1996 (Fujian: Guadun), from which it differs by the finer punctation of the body, by the presence of three yellowish-brown tubercles on each elytron and the shape of sclerotized spines of the internal sac.

Distribution and natural history.

The type locality is situated in Mangshan to the south of Yizhang, southern Hunan. The specimens were sifted from leaf litter in mixed deciduous forests at an altitude of 1400 m (Fig. 8).

Etymology.

The specific epithet (Latin, adjective: with spines) alludes to the presence of sclerotized spines in the internal sac of the aedeagus.