Pterotopteryx lida Ustjuzhanin et Kovtunovich, sp. n.

Figs 1, 2

MATERIAL EXAMINED. Holotype – female, Russia: Novosibirsk Region, Karasuk District, 5 km East of vil. Troitskoe, Biological Station, 53°43' N, 77°52' E, 10.VII.2011, leg. P.Ya. Ustjuzhanin and L.P. Ustjuzhanina (slide 201610, ISEA). Paratype: 1 ♀, same data as holotype (slide 201611, CUK).

DESCRIPTION. Female (Fig. 1). Head covered by grey appressed scales. Thorax and tegulae brown grey. Labial palpi dark grey, directed forward, three times longer than longitudinal eye diameter. Third segment short, tapered to apex. Antennae thin, brown-grey. Wingspan 14 mm. Wings brown-grey with admixture of pale yellow scales. First lobe of fore wing with six dark brown rectangular spots of scales. Basal part of both wings darkened with dark grey scales. Medial part of wings with expressed, wide, arched, dark brown band. Similar band but narrow and less expressed is in distal part of wings. Apices of all lobes terminated with small but well expressed dark brown spots of scales. Fringe on wings alternate with portions of brown, grey and yellow hairs. Hind legs grey from outside, pale yellow from inside.

Female genitalia (Fig. 2). Papillae anales narrow, elongated. Posterior and anterior apophyses thin, straight, equal in length. Antrum twice wider than ductus base, rather short, tubulate. Lamina postvaginalis wide, elongated, heavily sclerotized, three times wider than antrum. Ductus short, wide, more expanded near base of bursa. Ductus seminalis very long, twice longer than bursa copulatrix, loop-twisted at its confluence. Bursa copulatrix ellipsoidal, without signa.

Male unknown.

(Photo by S. Mishenin).

COMPARISION. In the wings color, Pterotopteryx lida is similar to P. dodecadactyla, but is distinctive in the narrower and arched distal band, whereas in P. dodecadactyla the band is wider and relatively straight. In addition, the new species has a darker color of the wings. In the female genitalia, the new species is similar to P. dodecadactyla in the shape and length of the posterior and anterior apophyses and in the short ductus, but is distinctive in the shorter antrum, the ellipsoidal bursa copulatrix, the absence of the signa and also in the wide sclerotized lamina postvaginalis.

ETYMOLOGY. The new species is named after Lidia (diminutively – Lida) Ustjuzhanina, daughter of the first author, who actively participated in expeditions and collection of materials.