Chinecallicerus glabriventris Assing 2019, nov.sp.
Creators: name: Assing, Volker
Publisher: name: Zenodo
Year: 2019
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Staphylinidae
Chinecallicerus
Chinecallicerus glabriventris

description: Chinecallicerus glabriventris nov.sp. (Figs 8-16, Map 1)
T
y p e m a t e r i a l: Holotype ♂:̎ China:YunnanProv., Gaoligong Mts NNR, 1.0- 1.1 km SE of Konshu vill., 25°43.10-16'N, 98°38.31-35'E, J. Hảjek & J. Růžička leg. / Ch21, 23) 30.vi.2016; 2180-2240 m, sift ♂ 16, broad-leaved forest, wet debris under bamboo in narrow valley near brook / Holotypus ♂ Chinecallicerus glabriventris sp. n., det. V. Assing 2018 ̎ (NMP).
E t y m o l o g y: The specific epithet (Latin, adjective) alludes to conspicuously sparsely punctate and very glossy abdomen.
D e s c r i p t i o n: Body length 5.7 mm; length of forebody 2.5 mm. Habitus as in Fig. 8. Coloration: head black; pronotum and elytra dark-brown; abdomen black with the posterior margins of tergites III-VII and the posterior portion of tergite VIII reddish; legs reddish with paler tarsi; antennae blackish with antennomeres I reddish-brown and II-III dark-brown; maxillary palpi brown with the apical palpomere pale-yellowish.
Head (Fig. 11) moderately transverse, approximately 1.1 times as broad as long; posteri- or angles obsolete, i.e., head gradually tapering behind eyes in dorsal view; punctation dense and fine, but distinct (Fig. 9); interstices without microsculpture and glossy. Eyes distinctly convex and large, approximately as long as distance from posterior margin of eye to posterior constriction of head in dorsal view. Antenna (Fig. 10) 1.9 mm long and slender; antennomeres IV nearly twice as long as broad, V-X of gradually decreasing length and decreasingly oblong, X weakly oblong, and XI barely as long as the combined length of IX and X. Maxillary palpomere III weakly dilated.
Pronotum (Fig. 11) 1.08 times as broad as long and 1.3 times as broad as head, broadest in posterior half; disc moderately convex in cross-section; posterior margin smoothly convex; punctation dense, fine, and defined; interstices without microsculpture.
Elytra (Fig. 11) slightly longer than pronotum; punctation very dense, coarser than that of pronotum, and somewhat asperate; interstices without microsculpture. Hind wings fully developed.
Abdomen (Fig. 12) narrower than elytra and very glossy; tergites III-VI with impunctate anterior impressions (Fig. 13), those of tergites III-V moderately deep and that of tergite VI shallow; remainder of tergal surfaces with conspicuously sparse punctation (Fig. 14); microsculpture completely absent; posterior margin of tergite VII with palisade fringe.
♂: tergite III with pronounced and apically acute median tubercle (Figs 12-13), other tergites unmodified; posterior margin of tergite VIII indistinctly pointed in the middle; posterior margin of sternite VIII convex; median lobe of aedeagus 0.54 mm long and shaped as in Figs 15-16.
♀: unknown.
C o m p a r a t i v e n o t e s: The only other described species with a similarly sparsely punctate abdomen is C. wrasei ASSING, 2006 from Northwest Yunnan (Map 1), with which C. glabriventris additionally shares a similar habitus and similar punctation of the forebody. The new species is distinguished from C. wrasei by smaller body size (C. wrasei: length of forebody 2.9 mm), much more slender antennae with distinctly oblong antennomeres IV-X (C. wrasei: antennomeres VI-X approximately as long as broad or weakly transverse), denser and finer punctation of the pronotum and the elytra, unmodified male tergites IV and VII (distinctly modified in C. wrasei), and a much smaller aedeagus (C. wrasei: median lobe of aedeagus 0.68 mm long). For illustrations of C. wrasei see ASSING (2006).
D i s t r i b u t i o n a n d n a t u r a l h i s t o r y: Thetypelocalityissituated in the Gaoligong Shan, West Yunnan, China (Map 1). The holotype was sifted from wet debris near a stream in a broadleaved forest at an altitude of 2180-2240 m.
description: Published as part of Assing, Volker, 2019, Five new species oI Chinecallicerus Irom China (Coleoptera, Staphylinidae, Aleocharinae, Geostibini), pp. 285-302 in Linzer biologische Beiträge 51 (1) on pages 290-296, DOI: 10.5281/zenodo.3762515