Trechus stratiotes, Schmidt, 2009

Schmidt, Joachim, 2009, Taxonomic and biogeographical review of the genus Trechus Clairville, 1806, from the Tibetan Himalaya and the southern central Tibetan Plateau (Coleoptera: Carabidae: Trechini) 2178, Zootaxa 2178 (1), pp. 1-72 : 58

The Trechus stratiotes group

Diagnosis: Head with frontal furrows deep, +/- strongly curved at middle, not flattened at level of hind suborbital pore. Frons and supraorbital areas strongly convex. Temples smooth. Mandibles normal. Pronotum cordate, with hind angles large; base straight or inner 3/5 slightly shifted posteriorly. Pronotal basal transverse depression diffuse limited towards disc; laterobasal foveae large and deeply developed. Pronotal median line distinct, deeper near base. Hind wings reduced to small stubs. Humerus broadly rounded. Each elytron with parascutellar seta, preapical seta and two discal setae on third interval, with anterior discal seta located on stria III at the end of the anterior elytral quarter, and with middle dorsal seta located on stria III somewhat behind elytral middle. Stria VIII deeply impressed from level of the fifth umbilicate pore backwards. Recurrent elytral preapical sulcus deeply impressed and directed to the end of the seventh stria. Ventral surface smooth. Legs short, with thick femora and thin tibia and tarsi; protibiae slightly dilated towards apices, hardly bowed, with a fine, sometimes indistinct groove on external surface. Two basal protarsi of male dilated, dentoid at the inner apical border. Aedeagal median lobe moderately stout, with basal bulb average and with basal velum completely reduced; terminal lamella short, not hooked at tip. Internal sac with a large copulatory piece. Parameres moderately stout, with left paramere slightly longer than right one, both with four relatively short setae at tip.

Species included: Monotypic: T. stratiotes sp. n. (Far Western Nepal).