Leptusa (Chondrelytropisalia) proiecta Assing 2008, nov.sp.
Creators: name: Assing, V.
Publisher: name: Zenodo
Year: 2008
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Staphylinidae
Leptusa
Leptusa proiecta

description: Leptusa (Chondrelytropisalia) proiecta nov.sp. (Figs 38-48, 73, Map 2)
T y p e m a t e r i a l: Holotype 6: China: Yunnan [CH07-21], Nujiang Lisu Aut. Pref., Gaoligong Shan, pass 22 km W Gongshan, N-slope, 3350-3400 m, 27°46'27"N, 98°26'50"E, fern, moss, litter sifted, 6. VI.2007, M. Schülke / Holotypus 6 Leptusa proiecta sp.n. det. V. Assing 2008 (cAss). Paratypes: 1♀: same data as holotype, but leg. A. Pütz (cPüt); 1♀: China: Yunnan [CH07-26], Nujiang Lisu Aut. Pref., Gaoligong Shan, pass 21 km NW Liuku, 3150 m, 25°58'22"N, 98°41'00"E, bamboo with shrubs, litter sifted, 9. VI.2007, M. Schülke (cSch).
D e s c r i p t i o n: 2.3-2.7 mm. Habitus as in Fig. 38. Coloration: body dark brown to blackish; legs rufous; antennae dark brown, with the basal 4 antennomeres reddish.
Head approximately as wide as long; puncturation coarse and dense, interstices distinctly narrower than diameter of punctures; microsculpture obsolete. Eyes moderately small, approximately as long as postocular region in dorsal view (Fig. 39). Antennae relatively slender (Fig. 40); antennomeres IV-V weakly oblong; VI approximately as wide as long; VII-X of increasing width and increasingly transverse; X approximately 1.5 times as wide as long. Maxillary palpus with penultimate palpomere almost three times as long as wide.
Pronotum strongly convex in cross-section, weakly transverse, 1.12-1.20 times as wide as long and approximately 1.20 times as wide as head; maximal width in anterior half; posterior angles marked; lateral margins in posterior half weakly concave in dorsal view; puncturation less coarse, less deep, and less defined than that of head, especially in median area of disc; microsculpture obsolete (Fig. 39).
Elytra approximately as wide and at suture 0.8 times as long as pronotum; humeral angles present; puncturation very coarse, well-defined, and dense; microsculpture absent (Fig. 39). Hind wings reduced. Metatarsomere I shorter than the combined length of II and III.
Abdomen (Fig. 41) approximately 1.10 times as wide as elytra; segments IV-VI subpar-allel; maximal width at segments V-VI; tergites III-VII anteriorly with distinct impressions, that of tergite VII slightly shallower than those of tergites III-VI; anterior impressions with very coarse and dense puncturation; puncturation of remainder of tergal regions fine and moderately sparse; microsculpture obsolete; posterior margin of tergite VII with narrow rudiment of a palisade fringe; tergites VII-VIII without evident sexual dimorphism (Fig. 42).
6: sternite VII posteriorly truncate, at posterior margin with 6 conspicuously long black setae; posterior margin of sternite VIII produced in the middle (Fig. 43); median lobe of aedeagus as in Figs 44-45; apical lobe of paramere as in Fig. 46.
♀: posterior margin of sternite VII with fine long setae, without additional pairs of conspicuously long black setae; posterior margin of sternite VIII weakly convex, in the middle indistinctly angled (Fig. 47); spermatheca as in Fig. 48.
E t y m o l o g y: The name (Latin, adjective: projecting) refers to the shape of the male sternite VIII, one of the characters separating this species from L. quinqueimpressa.
C o m p a r a t i v e n o t e s: The new species is readily distinguished from all its congeners by the distinctive morphology of the aedeagus. For characters separating it from other consubgeners known from China see the key above.
D i s t r i b u t i o n a n d b i o n o m i c s: Thespeciesisknown from two localities in the Gaoligong Shan, western Yunnan province, China (Map 2). The types were collected by sifting moss and the litter of fern, bamboo, and shrubs at altitudes of 3150- 3400 m (Fig. 73). On one occasion, the species was collected together with L. quinqueimpressa.
description: Published as part of Assing, V., 2008, Seven new species and additional records of Palaearctic Leptusa, primarily from Yunnan, China (Coleoptera: Staphylinidae: Aleocharinae), pp. 251-273 in Linzer biologische Beiträge 40 (1) on pages 265-268, DOI: 10.5281/zenodo.4523588