Tachyusa rabinovitchi Koch, 1936

Pa ṡnik, Grzegorz, 2006, A revision of the World species of the genus Tachyusa Erichson, 1837 (Coleoptera, Staphylinidae: Aleocharinae), Zootaxa 1146, pp. 1-152 : 38-40

Tachyusa rabinovitchi Koch, 1936 , stat. n. ( Figs. 24–25)

Tachyusa (Caliusa) ferialis ssp. rabinovitchi Koch, 1936: 212 .

Type material. Lectotype (here designated): ♂: Egypt, Oasis Feiran, Sud Sinai, 29– 30.V.1935, A. Rabinovitchi cep. ( MSNM) . Paralectotypes: 2♂♂: same data as the lectotype ( FMNH) .

Redescription. Body. Length 2.4–2.7 mm, convex, parallel­sided, glossy; head brown, pronotum and elytra red, abdomen black with three basal tergites red, legs yellow, antennae brown with antennomeres 1–3 red.

Head circular in outline; convex, eyes large, moderately protruding from lateral contours of head, length of each seen from above subequal to that of postocular region; surface of head without microsculpture; puncturation fine and moderately scattered. Antennae short, clearly increasing in width apically, antennomere 3 shorter than 2, antennomeres 4–7 longer than wide, antennomeres 8–10 quadrate, antennomere 11 nearly conical.

Pronotum quadrate, lateral sides gradually narrowed in straight line to obtuse hind angles; before base with small and shallow transverse impression; surface without microsculpture; puncturation fine, moderately dense and weakly asperate; pubescence at midline directed posteriorly.

Elytra subquadrate, at suture as long as pronotal length at midline; surface lacking microsculpture; puncturation fine, dense and weakly asperate.

Abdomen parallel­sided, bases of tergites 3–5 each with deep transverse impression, impressions with 7–8 longitudinal ridges, tergal puncturation fine and scattered, punctures very small and scarcely visible, surface without microsculpture.

Male. Aedeagus as in Figs. 24–25.

Female unknown.

Remarks. Tachyusa rabinovitchi is similar to T. agilis Baudi, 1869 , from which it differs by the paler pronotal colour, the coarser pronotal puncturation, the larger eyes, the distinct basal pronotal impression and by the shape of the aedeagus.

Distribution. This apparently rare species is known only from Egypt.