Tachyusa loebli Pa, 2006

Pa ṡnik, Grzegorz, 2006, A revision of the World species of the genus Tachyusa Erichson, 1837 (Coleoptera, Staphylinidae: Aleocharinae), Zootaxa 1146, pp. 1-152 : 81-83

Tachyusa loebli Pa ś nik, sp. n. ( Figs. 76–78)

Type material. Holotype: ♂: Turkey, Bolu, Konuralp­Akcakoca , 400 m, 15.V.1976, Besuchet & Löbl ( MHNG) . Paratypes: ♂: same data as holotype ( ISEA) ; ♂ and ♀: Turkey, Kastamonu, Kure a 5 km N, 600 m, 18.V.1976, Besuchet & Löbl ( MHNG) ; ♂: Turkey, Eregli env., Amatchtar, Zonguldag , 10.V.2001, I. Smatana ( VAPC) .

Description. Body. Length 2.7–3.0 mm, convex, parallel­sided, weakly glossy; body colour black; elytra pitchy brown, legs brown, tarsi yellow, antennae brown with antennomeres 1–3 red.

Head quadrate, flattened dorsally, broadly and moderately shallowly impressed medially; widest across eyes; eyes large, moderately protruding from lateral contours of head, length of each seen from above subequal to that of postocular region; surface of head with distinct isodiametric mesh microsculpture in male and obsolete microsculpture in female; puncturation fine and dense; pubescence short and moderately dense, directed inward. Antennae long, clearly increasing in width apically, antennomere 3 shorter than 2, antennomeres 4–8 longer than wide, antennomeres 9–10 sexually dimorphic, longer than wide in male and quadrate in female, antennomere 11 nearly conical.

Pronotum trapezoid in outline, moderately convex, glossy, widest in apical third, lateral sides rounded in front, gradually narrowed in straight line to rounded hind angles; before base with small and shallow transverse impression, broadly and deeply impressed medially in male and without impression in female; surface with distinct isodiametric mesh microsculpture in male and without microsculpture in female; puncturation fine and dense, scarcely visible in dense microsculpture; pubescence at midline directed posteriorly.

Elytra quadrate, slightly wider than pronotum, lateral sides arcuate, at suture as long as pronotal length at midline; surface lacking microsculpture; puncturation fine, dense and asperate.

Abdomen parallel­sided, bases of tergites 3–5 each with deep transverse impression, impressions with 7–8 longitudinal ridges, tergal puncturation fine and relatively sparse, punctures small and weakly visible, surface without microsculpture; pubescence moderately long and moderately dense, semirecumbent.

Male. Aedeagus as in Figs. 76–77.

Female. Spermatheca as in Fig. 78.

Remarks. Tachyusa loebli is similar to T. turcica , from which it differs by the head flattened dorsally, the surface of head impressed medially, the temples parallel­sided and by the shape of the aedeagus.

Etymology. The species is dedicated to Ivan Löbl (Geneva), a specialist in Staphylinidae , who collected some of the types and made this material available for study.

Distribution. The new species is known so far only from Turkey.