Oxypoda (Mycetodrepa) obscuricollis, Assing, Volker, 2007

Assing, Volker, 2007, On the Oxypoda species of Turkey and adjacent regions. II. Three new species, additional records, and a checklist (Coleoptera: Staphylinidae, Aleocharinae), Zootaxa 1411, pp. 1-24 : 16-17

Oxypoda (Mycetodrepa) obscuricollis sp. n.

( Figs. 34–40 )

Type material. Holotype: ɗ, "Namrun, Anat. m., 10.5.– 3.6.63, leg. F. Schubert / Holotypus ɗ Oxypoda obscuricollis sp. n. det. V. Assing 2006" ( NHMW). Paratypes: 2ΨΨ: same data as holotype ( NHMW, cAss).

Description. Body length 3.0– 3.2 mm. Habitus as in Fig. 34 . Coloration: head blackish; pronotum brown with paler margins; elytra yellowish brown, with the scutellar region and the posterior angles weakly infuscate; abdomen dark brown, with the posterior margins of segments III–VI, the posterior 1/3 of segment VII and VIII reddish, sometimes all of segments III–IV reddish; legs yellowish; antennae dark brown, with the basal 2–3 antennomeres yellowish to yellowish brown.

Head weakly oblong; puncturation moderately dense, fine, and shallow; interstices on average wider than diameter of punctures and with distinct microreticulation; eyes large, approximately as long as postocular region in dorsal view ( Fig. 35 ). Antennae with antennomere IV strongly transverse; antennomeres V–X of similar width and slightly less than twice as wide as long ( Fig. 36 ).

Pronotum approximately 1.15 times as wide as long and 1.35 times as wide as head; more strongly narrowed anteriorly than posteriorly; maximal width in or slightly behind middle; puncturation relatively fine, weakly granulose, and rather dense; interstices on average narrower than diameter of punctures and with distinct microreticulation ( Fig. 35 ).

Elytra large, approximately 1.3 times as wide as pronotum and at suture slightly longer than pronotum; puncturation dense, fine (but more distinct than that of pronotum), and weakly granulose ( Fig. 35 ). Hind wings fully developed. Metatarsomere I approximately as long as the combined length of metatarsomeres II– IV or nearly so.

Abdomen distinctly narrower than elytra, widest at segments IV/V; puncturation fine and on anterior tergites very dense, gradually decreasing in density towards apex of abdomen; microsculpture absent on anterior tergites and shallowly transverse on posterior tergites; posterior margin of tergite VII with pronounced palisade fringe.

ɗ: posterior margin of tergite VIII distinctly convex; posterior margin of sternite VIII distinctly produced in middle and with long marginal setae; median lobe of aedeagus of distinctive shape and with internal structures of distinctive morphology ( Fig. 37 ). Apical lobe of paramere similar to that of other species of the subgenus.

Ψ: posterior margin of tergite VIII moderately convex ( Fig. 38 ), that of sternite VIII weakly convex ( Fig. 39 ); spermatheca as in Fig. 40 .

Comparative notes. The new species is best distinguished from its consubgeners by the shape and internal structures of the median lobe of the aedeagus and from most of them additionally by the more transverse antennomere IV. From O. formosa Kraatz , whose male sexual characters are somewhat similar, it is separated also by the distinctly darker pronotum (in O. formosa usually reddish) and also noticeably darker abdomen, the slightly shorter antennae and smaller body size, as well as by the distinctly less dense puncturation of the abdomen, especially of tergites VI–VIII. For illustrations of the genitalia of other Western Palaearctic Mycetodrepa species see Zerche (1999).

Etymology. The name (Latine, adjective, with darkened pronotum) refers to one of the characters distinguishing this species from the otherwise similar O. formosa .

Distribution and bionomics. The type locality, today Çamlıyayla, is situated in Mersin province, central southern Anatolia. Additional bionomic data are not available.

Figures

FIGURES 34 – 40. Oxypoda obscuricollis sp. n. (34 – 37: holotype): 34 — habitus; 35 — forebody; 36 — antenna; 37 — median lobe of aedeagus in lateral view; 38 — female tergite VIII; 39 — female sternite VIII; 40 — spermatheca. Scale bars: 34: 1.0 mm; 35: 0.5 mm; 36, 38 – 39: 0.2 mm; 37, 40: 0.1 mm.