Deinopteroloma songi 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 : 57-60

Deinopteroloma songi Peng & L.-Z. Li sp. n. (Figs 3, 7)

Type material.

Holotype ♂: China: Xizang Prov., Linzhi County, Pailong, 30°02'N, 95°00'E, 13.IV.2017 2100 m, Xiao-Bin Song leg. / Holotypus ♂ Deinopteroloma songi sp. n., det. Peng & Li. 2018 (SNUC). Paratypes: 6 ♂♂, 10 ♀♀: same label data as holotype / PARATYPE (yellow), D. songi sp. nov., det. Peng & Li, 2019 (SNUC).

Description.

Measurements (in mm) and ratios: BL 3.50-3.73, FL 3.44-3.65, HL 0.59-0.67, HW 0.78-0.83, AnL 1.68-1.78, PL 0.83-0.93, PW 1.30-1.47, EL 1.92-2.09, EW 1.50-1.67, AL 0.98-1.08, HL/HW 0.76-0.87, HW/PW 0.56-0.64, HL/PL 0.71-0.77, PL/PW 0.63-0.68, EL/EW 1.25-1.29.

Habitus as in Fig. 3A. Coloration: Body dark-brown; pronotum with broadly dark-yellowish lateral margins; each elytron with 3 or 4 yellowish brown tubercles; antenna with antennomeres I–IV yellowish and V–VIII gradually more infuscate apically, VIII–XI blackish-brown; maxillary palpi dark-yellowish.

Head transverse; posterior part of clypeus and vertex distinctly elevated, with indistinct lateral impressions in middle part and semicircular deep impression in front of ocelli, infraorbital ridges slightly impressed; eyes large and convex; small acute postocular ridge situated away from posterior margin of eye; ocelli large; frons smooth and glossy. All antennomeres longer than broad; measurements of antennomeres (length): I: 0.22; II: 0.14; III–VII: 0.16; VIII: 0.13; IX–X: 0.11; XI: 0.19.

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

Elytra without distinct longitudinal ridges; suture elevated in posterior two thirds; punctation coarse and arranged in partly irregular series (except in posterior portion of elytra); each elytron with approximately 3 or 4 smooth tubercles. Hind wings present.

Male. Protarsomeres I–IV very weakly dilated; sternites III–VII unmodified; sternite VIII (Fig. 3B) distinctly transverse, posterior margin broadly concave in middle; aedeagus as in Fig. 3C, D, both parameres slender and slightly curved in ventral view, distinctly extending apex of median lobe; internal sac with pair of sclerotized spines.

Female. Protarsomeres I–IV not dilated. Abdominal sternite VIII without posterior excision. Otherwise similar to male.

Comparative notes.

Based on the coloration of the body, 6-8 smooth tubercles of the elytra, the presence of pronounced elevations on the pronotum and elytra, as well as the morphology of the aedeagus, the new species is most similar to D. sextuberculatum Shavrin & Smetana, 2016, from which it can be distinguished by the darker coloration, the smaller size ( D. sextuberculatum : 4.25-4.92 mm), the shape of the pronotum, the deeper posterior excision of the male sternite VIII and the stouter median lobe of the aedeagus. For illustrations of D. sextuberculatum see Shavrin and Smetana (2016).

Distribution and natural history.

The type locality is situated in Pailong to the northeast of Linzhi, southern Xizang. The specimens were sifted from leaf litter, moss and mushrooms in broad-leaved forests at an altitude of 2100 m (Fig. 7).

Etymology.

Patronymic, named after Xiao-Bin Song, who collected some of the type specimens.