Holotype. m MONGOLIA: Uburchangaj aimak 130 km OSO von Somon Bajanleg, 1150 m Exp. Dr. Z. KASZAB, 1967 / Nr. 882 3.VII.1967 / Prep. Gen. N. Passerin d’E. / 4109 m / Genital slide no. 4109 Passerin d’Entrèves / Holotypus Scythris bajanlegi P.E. & R.

Paratypes. 1 m MONGOLIA: Uburchangaj aimak 130 km OSO von Somon Bajanleg, 1150 m Exp. Dr. Z. KASZAB, 1967 / Nr. 882 3.VII.1967 / Prep. Gen. N. Passerin d’E. / 4105 m / Genital slide no. 4105 Passerin d’Entrèves; 1 f MONGOLIA: Uburchangaj aimak 130 km OSO von Somon Bajanleg, 1150 m Exp. Dr. Z. KASZAB, 1967 / Nr. 882 3.VII.1967 / Prep. Gen. N. Passerin d’E. / 4114 f / Genital slide no. 4114 Passerin d’Entrèves.

Description – Male. Wingspan 12 mm. Fore wings narrow, light brown, fringe light brown. Hind wings whitish and glossy, fringe very light brown. Head and thorax brown, abdomen light brown. Legs light brownish. Antennae light brown.

Female. Wingspan 10 mm. Fore wings cream-coloured, fringe very light brown. Hind wings white and glossy, fringe whitish. Head, thorax and abdomen light brown. Legs very light brown. Antennae light brown.

Male genitalia (Fig. 5 A, B, and C). Uncus laminar, notched at apex, well sclerotized at base. The gnathos is turned downward and backward, sharp and short, very enlarged at base and narrowing abruptly toward the well-sclerotized apex. Tegumen almost as long as the valvae, globose. Valvae symmetrical, thick and curved, with setae on the distal half. Aedeagus short, very enlarged at base and narrower at apex. T8 triangular, elongate, with a rounded fore edge; S8 triangular, with a sclerotized thickening at proximal edge and a small scissure at apical edge.

Female genitalia (Fig. 6). Sterigma ringshaped, distally thickened and flattened, bearing two symmetrical expansions on sides. Surroundings of ostium bursae membranaceous, barely visible. Ductus bursae cylindrical, membranous, almost indescernible.

Distribution. Known only from Mongolia.

Biology. The species was collected in southern Mongolia at the beginning of July, near a dry salt basin.

Remarks. Belike, S. bajanlegi sp. n. is related to the species of cicadella species-group (BENGTSSON 1997 a).

Etymology. The species is named after Bajanleg, in Ovorhangay aimak, where it was collected for the first time by KASZAB.