Anaulacaspis gilva, 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 : 246-247

Anaulacaspis gilva spec. nov.

( Figs 184–190 , Map 6 )

Type material: Holotype ♂: “ PAK, Northern Areas , Ghizar valley, Thiee , 36.0229°N, 74.1681°E, 5.7.2007 1760 m, leg. H. Mühle / Holotypus ♂ Anaulacaspis gilva sp. n., det. V. Assing 2016” ( MNB) . Paratypes: 2 ♂♂, 2 ♀♀: same data as holotype ( MNB, cAss); 1 ♀: “ PAK, Northern Areas , Chilas LF, 35.4310°N, 74.1002°E, 7.7.2007 1075 m, leg. H. Mühle ” ( MNB) ; 1 ♀: “ PAK, Northern Areas , 15 km E Chilas, 35.4215°N, 74.2711°E, 7.7.2007 1100 m, leg. H. Mühle ” ( MNB) .

Etymology: The specific epithet (Latin, adjective: yellow) alludes to the pale coloration of this species.

Description: Body length 1.8–2.1 mm; length of forebody 0.95–1.05 mm. Coloration: head dark-yellowish to yellowish-red; pronotum reddish-yellow; elytra yellow with a very indistinct, pale, small, and weakly delimited medio-lateral infuscate spot; abdomen yellow, usually with the antero-median portion of tergite VI black, rarely with the median portion of tergite VI more extensively and also the median portion of tergite V infuscate; legs pale-yellowish; antennae brown with the basal 3–4 antennomeres pale-yellowish.

Head approximately 1.1 times as broad as long, without sexual dimorphism; punctation sparse and extremely fine. Eyes longer than postocular region in dorsal view. Antenna 0.7–0.8 mm long and distinctly incrassate apically; antennomere IV weakly oblong; antennomeres VI–X of gradually increasing width and increasingly transverse, IX–X more than 1.5 times as broad as long.

Pronotum approximately 1.1 times as broad as long and as broad as head, or nearly so, without sexual dimorphism; with a pronounced, but small median impression near posterior margin, this impression anteriorly sometimes extending into short and fine sulcus; punctation very fine and dense, slightly more distinct and denser than that of head.

Elytra approximately 0.9 times as long as pronotum; punctation very fine and rather sparse. Hind wings fully developed.

Abdomen approximately as broad as elytra; punctation very fine and moderately dense, anterior and posterior portions of tergites with sparse punctation; tergite VIII ( Figs 184 , 189 ) with truncate posterior margin and with a comb-like row of slightly modified marginal setae.

♂: posterior margin of sternite VIII ( Fig. 185 ) obtusely pointed in the middle, marginal setae thin and not very long; median lobe of aedeagus ( Figs 187–188 ) approximately 0.35 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.

♀: posterior margin of sternite VIII ( Fig. 190 ) broadly and shallowly concave in the middle; spermatheca small and comma-shaped, not distinctive.

Comparative notes: As can be inferred from the similarly derived chaetotaxy of tergite VIII and from the similarly derived morphology of the aedeagus (ventral process very long and slender both in lateral and in ventral view; internal sac with a long dark structure), A. gilva is undoubtedly most closely related to A. pectinata (see the following section). It is distinguished from this species by smaller size, paler coloration, less slender and shorter antennae with more strongly transverse antennomeres V–X, smaller and less bulging eyes, shorter and less broad elytra, a truncate posterior margin of tergite VIII with shorter and less dense marginal setae, and a slightly smaller aedeagus with a ventral process of slightly different shape.

Distribution: The known distribution is confined to North Pakistan ( Map 6 ). The specimens were collected at altitudes of 1075–1760 m, one of them with a light trap.

Figures

Map 6: Distributions of Anaulacaspis convexa (white circles), A. seclusa (black circles), and A. gilva (white diamonds) in the West Palaearctic and Middle Asia, based on revised records.

Figs 164–186: Anaulacaspsis iberica (164–166), A. nigrina (167–172), A. beijingensis (173–177), A. taiwanica (178–183), and A. gilva (184–186): male tergite VIII (164, 167, 173, 178, 184); male sternite VIII (165, 168, 174, 179, 185); female sternite VIII (166, 172, 177, 183); median lobe of aedeagus in lateral and in ventral view (169–171, 175–176, 180–181); female tergite VIII (182); spermatheca (186). Scale bars: 0.1 mm.

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.