Anaulacaspis pectinata, Assing, 2016

Assing, Volker, 2016, Revision of the Anaulacaspis species of the Palaearctic region (Coleoptera: Staphylinidae: Aleocharinae), Beiträge Zur Entomologie = Contributions to Entomology 66 (2), pp. 201-255 : 247-248

Anaulacaspis pectinata spec. nov.

( Figs 191–195 , Map 7 )

Type material: Holotype ♂: “ CHINA: Yunnan, Baoshan Pref. , creek valley 21 km S Tengchong, 1358 m, 24°50'22"N, 98°27'01"E, washed from creek border and gravel bank, 30.VIII.2009, leg. M. Schülke [CH09-20] / Holotypus ♂ Anaulacaspis pectinata sp. n., det. V. Assing 2016” ( MNB).

Etymology: The specific epithet is an adjective derived from the Latin noun pecten (comb) and alludes to the comb-like setae at the posterior margin of tergite VIII.

Description: Body length 2.4 mm; length of forebody 1.3 mm. Coloration: head dark reddish-brown; pronotum reddish; elytra pale-reddish with a very indistinct and diffuse medio-lateral infuscate spot; abdomen darkyellowish, with the median portions of tergite V and VII infuscate; legs yellowish; antennae blackish-brown with the basal three antennomeres yellowish.

Head 1.07 times as broad as long, without sexual dimorphism; punctation rather sparse and extremely fine. Eyes much longer than postocular region in dorsal view. Antenna 0.95 mm long and slender; antennomeres IV and V weakly oblong, VI approximately as broad as long, VII–X of gradually increasing width and increasingly transverse, X barely 1.5 times as broad as long.

Pronotum approximately 1.1 times as broad as long and slightly broader than head, with a pronounced, but small impression near posterior margin, this impression anteriorly extending into short and fine sulcus not reaching middle of pronotum; punctation very fine and dense, more distinct and denser than that of head.

Elytra slightly longer than pronotum; punctation very fine and moderately dense. Hind wings fully developed.

Abdomen narrower than elytra; punctation moderately fine and moderately dense, anterior and posterior portions of tergites with sparse punctation; tergite VIII ( Figs 191–192 ) with weakly convex posterior margin and with a comb-like row of slightly modified marginal setae.

♂: posterior margin of sternite VIII ( Fig. 193 ) obtusely pointed in the middle, marginal setae thin and not very long; median lobe of aedeagus ( Figs 194–195 ) approximately 0.4 mm long and slender; ventral process very slender and apically acute both in lateral and in ventral view; internal sac with a long dark structure.

♀: unknown.

Comparative notes: For characters distinguishing A. pectinata from its adelphotaxon A. gilva see the comparative notes in the preceding section.

Distribution and natural history: The type locality is situated in Northwest Yunnan at an altitude of approximately 1360 m. The holotype was washed from the gravel bank of a stream.

Figures

Map 7: Distributions of Anaulacaspis beesoni (black circles), A. pectinata (white star), A. schuelkei (black triangle), A. beijingensis (white circles), and A. taiwanica (black star) in the East Palaearctic region, based on revised records.

Figs 187–210: Anaulacaspsis gilva (187–190), A. pectinata (191–195), and A. formosa (196–210; 199–200: Tunisia; 201–203: Morocco; 204–205: holotype of A. macra; 206: Murcia; 207–208: Andalucía): median lobe of aedeagus in lateral and in ventral view (187–188, 194–195, 199–208); female tergite VIII (189); female sternite VIII (190, 209); male tergite VIII (191, 196); posterior margin of male tergite VIII (192, 197); male sternite VIII (193, 198); spermatheca (210). Scale bars: 187–191, 193–196, 198–210: 0.1 mm; 192, 197: 0.05 mm.