Orphnebius (Deroleptus) spoliatus Assing 2016, spec. nov.
Creators: name: Assing, Volker
Publisher: name: Zenodo
Year: 2016
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Staphylinidae
Orphnebius
Orphnebius spoliatus

description: Orphnebius (Deroleptus) spoliatus spec. nov.
(Figs 58, 85, 91, 317–324)
Type material: Holotype ♂: “ Lao-NE, Hua Phan prov., 20°12'N 104°01'E, Phu Phan Mt., ~ 1750 m, 17.v.–3.vi. 2008, Vít Kubáň leg. / Holotypus ♂ Orphnebius spoliatus sp. n., det. V. Assing 2015” (NHMB).
Paratypes: 15 exs. [1 ♂ teneral]: same data as holotype (NHMB, cAss).
Etymology: The specific epithet is the past participle of the Latin verb spoliare (to rob) and alludes to the absence of distinct processes of the abdominal paratergites and sternites III–V.
Description: Body length 5.0– 6.6 mm; length of forebody 2.1–2.7 mm. Coloration: forebody black; abdomen palereddish with segment VII dark-brown to blackish-brown; legs with the pro- and mesofemora and the apical half of the metafemora blackish-brown to blackish, the basal half of the metafemora yellow, the tibiae dark-brown, and the tarsi reddish; antennae blackish with (parts of) antennomeres II and III often reddish; maxillary palpi reddish to dark-brown with the terminal palpomere yellowish.
Head (Fig. 85) 1.11–1.17 times as broad as long, posterior angles practically obsolete; dorsal surface with fine and very sparse punctation and with depressed pubescence; interstices without microsculpture. Eyes large, approximately as long as distance from posterior margin of eye to posterior constriction of head. Antenna (Fig. 58) slender and weakly incrassate, 1.9–2.2 mm long; antennomeres III and IV slightly flattened; antennomeres IV–VII distinctly oblong, VIII approximately as long as broad, IX–X weakly transverse, XI longer than the combined length of IX and X.
Pronotum (Fig. 85) approximately 1.15 times as broad as long and 1.01–1.05 times as broad as head, strongly convex in cross-section; lateral margins nearly straight and subparallel in dorsal view; disc with scattered macropunctures; antero-lateral portions with two long, black and erect setae on either side.
Elytra (Fig. 85) approximately as long as pronotum; punctation sparse, weakly granulose in posterior portion; pubescence pale, long, and depressed or sub-erect. Hind wings present. Legs long and slender; metatibia 1.15–1.25 mm long; metatarsus 0.82–0.88 times as long as metatibia; metatarsomere I nearly as long as the combined length of II–IV.
Abdomen (Fig. 91): sternites and paratergites III–V without postero-lateral processes; tergites III–IV with a lateral setiferous puncture, otherwise impunctate; tergites V–VI with two lateral punctures on either side and with a median pair of small punctures near posterior margin; tergite VI with a tubercle in the middle of lateral margin and with a short keel near posterior portion of lateral margin on either side; tergite VII, except for anterior margin, with conspicuously coarse and dense, partly confluent non-setiferous punctation, posterior margin with palisade fringe; tergite VIII (Fig. 320) oblong, with two transverse series of black setae posteriorly, posterior margin with a pair of tooth-like projections, with a V-shaped excision between these projections, and with a small median tooth in the middle of this excision; sternite VIII (Figs 321–322) oblong, posterior margin convex in the middle, lateral margins with two blunt setiferous projections in posterior portion; tergite X with a pair of brush-like clusters of setae anteriorly (Fig. 323).
♂: posterior margin of sternite VIII (Fig. 321) distinctly convex; median lobe of aedeagus (Figs 317–318) approximately 0.5 mm long and of simple shape; ventral process long, straight in lateral view, and apically strongly convex in ventral view; paramere (Fig. 319) approximately 0.45 mm long and slender, apical lobe apically convex.
♀: posterior margin of sternite VIII weakly convex (Fig. 322); spermatheca (Fig. 324) approximately 0.18 mm long, proximal portion of duct distinctly dilated in the middle.
Comparative notes: This species somewhat resembles O. tridentatus of the O. niger group in habitus, proportions, the shapes of the abdominal tergite and sternite VIII, and the shape of the paramere, but differs from it by larger body size, the coloration (O. tridentatus: posterior portion of tergite VIII blackish-brown; legs dark-brown, metafemora not bicoloured), a relatively larger head, larger eyes, much longer and more slender antennae, and a much longer and differently shaped median lobe of the aedeagus. For illustrations of O. tridentatus see ASSING (2015a).
Distribution and natural history: The type locality is situated in Hua Phan province in northeastern Laos. The holotype was collected at an altitude of approximately 1750 m, together with O. cernens, O. lunatus, O. fuscapicalis, O. fusicollis, and an unnamed species. One of the paratypes is teneral.
description: Published as part of Assing, Volker, 2016, On some Lomechusini of the Palaearctic and Oriental regions (Coleoptera: Staphylinidae: Aleocharinae), pp. 13-111 in Beiträge Zur Entomologie = Contributions to Entomology 66 (1) on pages 67-68, DOI: 10.21248/contrib.entomol.66.1.13-111, http://zenodo.org/record/6421171