Liogluta nigrobusta, Assing, 2016

Assing, Volker, 2016, On the Staphylinidae of Turkey XI. Two new species, new synonymies, and additional records (Insecta: Coleoptera), Linzer biologische Beiträge 48 (1), pp. 269-280 : 272-273

Liogluta nigrobusta nov.sp. ( Figs 1-11 )

T y p e m a t e r i a l: Holotype 3: "TR, Artvin, ENE Artvin, Dalis Dağ, 1800-2000 m, ca. 41°13'N, 41°55'E, 8.-18.VII.2014, pitfall, leg. C. Reuter / Holotypus 3 Liogluta nigrobusta sp. n. det. V. Assing 2016" (cAss). Paratypes: 5♀♀ (3 severely damaged): same data as holotype (cFel, cAss).

E t y m o l o g y: The specific epithet is an adjective composed of the Latin adjective niger (black) and robustus (robust). It alludes to the robust habitus and dark coloration of the species.

D e s c r i p t i o n: Body length 4.5-4.7 mm; length of forebody 2.0- 2.2 mm. Habitus as in Fig. 1 . Coloration: body black; legs with the femora dark-brown, the tibiae reddish to dark-reddish, and the tarsi pale-reddish; antennae blackish; maxillary palpi darkbrown with the apical palpomere yellowish.

Head ( Figs 2-3 ) distinctly transverse and dilated posteriorly, broadest behind eyes; punctation fine and moderately dense; interstices with pronounced microreticulation. Eyes weakly convex and weakly protruding from lateral contours of head, slightly shorter than postocular region in dorsal view. Antenna 1.6 mm long and shaped as in Fig. 4 .

Pronotum ( Figs 2, 5 ) 1.15-1.20 times as broad as long and approximately 1.3 times as broad as head, somewhat depressed in postero-median portion; pubescence of midline directed posteriad; punctation rather dense and fine; interstices with pronounced microreticulation.

Elytra ( Figs 2, 6 ) rather short, 0.77-0.80 times as long as pronotum; punctation more distinct than that of head and pronotum; interstices with pronounced microreticulation, but with more shine than those of head and pronotum. Hind wings fully developed.

Abdomen distinctly broader than elytra, broadest at segment VI; punctation fine, rather dense on anterior tergites, gradually becoming sparser towards posterior tergites, rather sparse on tergite VII; interstices with distinct microreticulation; posterior margin of tergite VII with palisade fringe.

3: posterior margin of tergite VIII very weakly convex, nearly truncate in median portion; sternite VIII longer than tergite VIII and with convex posterior margin; median lobe of aedeagus 0.85 mm long and shaped as in Figs 7-8 .

♀: posterior margin of tergite VIII broadly convex ( Fig. 9 ); posterior margin of sternite VIII broadly convex and with moderately stout marginal setae ( Fig. 10 ); spermatheca ( Fig. 11 ) small in relation to body size, with long and distinctly conical apical cuticular invagination.

C o m p a r a t i v e n o t e s: This species is distinguished from all its congeners by the primary sexual characters. From all the Liogluta species known from Turkey and the Caucasus region, it is easily distinguished by external characters alone, particularly the combination of dark coloration, relatively large size, pronounced microsculpture and nearly matt forebody, a posteriorly dilated head with relatively small eyes, relatively short elytra, and a broad abdomen.

D i s t r i b u t i o n: The type locality is situated near Artvin, Artvin province, in northeastern Anatolia, at an altitude of 1800-2000 m.

Figures

Figs 1-8: Liogluta nigrobusta nov.sp.: (1) habitus; (2) forebody; (3) median dorsal portion of head; (4) antenna; (5) median portion of pronotum; (6) sutural portion of right elytron; (7-8) median lobe of aedeagus in lateral and in ventral view. Scale bars: 1: 1.0 mm; 2, 4: 0.5 mm; 7-8: 0.2 mm; 3, 5-6: 0.1 mm.

Figs 9-16: Liogluta nigrobusta nov.sp. (9-11), Vulda substricta nov.sp. (12-15), and Aleochara sp. (16): (9) female tergite VIII; (10) female sternite VIII; (11, 16) spermatheca; (12) forebody; (13) head; (14) antenna; (15) aedeagus. Scale bars: 12-14: 1.0 mm; 9-10, 15: 0.5 mm; 11, 16: 0.1 mm.