Conisternum matiseki nov.sp. (figs 1-3)

T y p e m a t e r i a l: Holotype: ♁, IRAN, SE Iran Rask, 405 m [a.s.l.], N 26°11.035’ E 61° 23.675’, April to May 2017, Mal. [L Malaise] trap, M. Ghafouri Maghaddam leg. (FSPC).

D e s c r i p t i o n: Body length 5 mm, primary colouration dark.

Head: Totally grey, the face, orbits, gennae, frontal vitta, parafacials brown, antennae totally black, arista bare and thickened in first quarter, palpi yellow with very short black bristles, vibrissal callus with three strong bristles.

Thorax: Chaetotaxy standard for the genus, basal and scutellar bristles of equal size, all femora yellowish-brown apically.

Abdomen: ♁. Sternites 3 and 4 very long, along the circumference of both sternites narrow stripe of the hyaline membrane (fig. 1), the lobes of sternite 5 long including his body, medially between both lobes with sh ort black bristles. Cerci separated, narrowed and very long with short black bristles basally (fig. 2), surstyli very short. Praegonite very narrow, long with two short bristles apically (fig. 3).

D i f f e r e n t i a l d i a g n o s i s: See key summarised with all Palaearctic species, cf. Šifner (2013).

E t y m o l o g y: I dedicate this species to Matyas Chott (Nové Dvory 69, 262 03, Czech Republic), a gifted young observer of nature.