Drepasiagonusa procera Assing 2018, nov.sp.
Creators: name: Assing, Volker
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Staphylinidae
Drepasiagonusa
Drepasiagonusa procera

description: Drepasiagonusa procera nov.sp. (Figs 6-9, 37-39)
T y p e m a t e r i a l: Holotype ♀: " CHINA: Yunnan, Nujiang Lisu Pref., Gaoligong Shan, W " Cloud pass", 24 km NW Liuku, 25°59'00''N, 98°40'14''E, 2907 m, small waterfall, wet moss sifted, 3.IX.2009, leg. M. Schülke [CH09-23] / Holotypus ♀ Drepasiagonusa procera sp.n., det. V. Assing 2018" (MNB).
E t y m o l o g y: The specific epithet (Latin, adjective: slender) alludes to the distinctive habitus of this species.
D e s c r i p t i o n: Body length 4.2 mm; length of forebody 2.0 mm. Habitus as in Fig. 6. Coloration: forebody reddish; abdomen reddish with most of tergite VI, the anterior two-thirds of tergite VII, and an antero-median spot on tergite III-V blackish; legs, antennae, and maxillary palpi reddish.
Head (Figs 7, 37) approximately as long as broad; punctation shallow, rather large, and extremely dense (except on frons), with the interstices reduced to narrow ridges; microsculpture pronounced. Eyes moderately convex and small, little more than half as long as distance from posterior margin of eye to posterior constriction of head. Antenna (Fig. 8) 1.3 mm long and very slender; antennomeres IV approximately twice as long as broad, V-X of gradually decreasing length and decreasingly oblong, X weakly oblong, and XI approximately as long as the combined length of IX and X. Mandibles (Fig. 37) each with a pronounced, long and acute molar tooth.
Pronotum (Fig. 7) weakly transverse, 1.08 times as broad as long and approximately as broad as head, broadest in the middle; lateral margins distinctly convex in the middle and sinuate near posterior angles (dorsal view); punctation and microsculpture similar to those of head, but punctures even shallower and less defined.
Elytra (Fig. 7) 0.85 times as long as pronotum; punctation extremely dense, moderately fine, and defined. Hind wings not examined. Metatarsomere I approximately as long as the combined length of metatarsomeres III and IV.
Abdomen (Fig. 9) as broad as elytra; tergites III-V with moderately deep anterior impressions, tergite VI without anterior impression; punctation fine and dense, only slightly sparser on tergite VII than on anterior tergites; interstices with distinct microreticulation; posterior margin of tergite VII with palisade fringe; posterior margin of tergite VIII weakly convex.
♂: unknown.
♀: posterior margin of sternite VIII obtusely produced in the middle (Fig. 38); spermatheca shaped as in Fig. 39.
C o m p a r a t i v e n o t e s: Drepasiagonusa procera is readily distinguished from all other species of the genus by its conspicuous external characters alone: relatively large body size; slender habitus; a reddish forebody; long and very slender antennae with oblong antennomeres IV-X; small eyes; short elytra.
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: The type locality is situated near Gongshan in the Gaoligong Shan, Northwest Yunnan. The holotype was sifted from wet moss near a small waterfall at an altitude of approximately 2900 m.
description: Published as part of Assing, Volker, 2018, New species and additional records of Cephalocousya and Drepasiagonusa from China and Russia (Coleoptera: Staphylinidae: Aleocharinae: Oxypodini), pp. 75-88 in Linzer biologische Beiträge 50 (1) on pages 83-84, DOI: 10.5281/zenodo.3985285