Stenoptilia lasani, 2017

Ustjuzhanina, Anna, 2017, Pterophoridae (Lepidoptera) fauna of the Republic of Tuva, Zootaxa 4319 (2), pp. 317-328 : 322-324

StenoPtilia lasani Ustjuzhanin, Rekelj & Kovtunovich , sp.nov.

( Figs. 2–4 )

Type material. Holotype: female ( SMNH 0283 ) Tuva, Tandinsky distr., vill. Balgazyn env., Sands- Pinus , tract Shambalyg , 990 m, 51°10′N, 95°01′E., 11.vi.2004, J. Hron & M. Cesanek & J. Rekelj. In Coll . SMNH. Paratypes: 8 ♂ 3 ♀, (1 ♂, 1 ♀ ZISP; 2 ♂ CUK; 1 ♂ SMNH; 3 ♂, 2 ♀ CRS; 1 ♂ CLS) with same data as holotype ; 2 ♂ 3 ♀, (1 ♂ 2 ♀ CUK; 1 ♂ 1 ♀ CRS); Tuva, Kaa-Chem distr., Academician Obruchev rd., Ondum reserve, canyon Ondum , 800 m ( Fig. 5 ), 52°37′N, 96°47′E, 12.vi.2004, J. Hron & M. Cesanek & J. Rekelj ; 1 ♀ ( CUK); Tuva, W. Tannu-Ola Mts., 40 km NE vill. Khandagaity , 2350 m, 50°43′N, 92°20′E, 22.vi. 2004, J. Hron & M. Cesanek & J. Rekelj.

External characters. Head, thorax and tegula pale grey. Labial palpus brown laterally, white above, short, length equal to eye diameter or slightly longer. Antenna thin, dark grey. Wingspan 22–24 mm (in holotype 23 mm). Fore wing brown-grey, distinctive elongated dark brown spot at cleft base. Small round spot in median part of wing. Fringe inside cleft pale grey. Two dark brown spots on outer edge of fringe on first and second lobe. Hind wing unicolorous, brown-grey. Colour of fringe on all three lobes the same as ground colour of wing. Hind leg pale grey.

Male genitalia. Valva slightly concave on upper edge in middle. Cucullus narrow, smoothly arched, apex slightly tapered. Uncus short, narrow triangle, apex slightly extended beyond posterior edge of tegumen. Tegumen lobes not expressed, small depression in median part of tegumen. Anellus arms short, slightly curved, far from reaching uncus base. Phallus significantly shorter than valva, bent at right angle. Thin, long cornutus in median part of phallus, large group of small spinules filling distal ¼. Basal process of phallus bent towards caecum.

Female genitalia. Ostium bursae rounded, width ¼ of the space between posterior apophyses. Antrum parallel-sided, distinctly sclerotized, width half the length of it, slightly shorter than signum, somewhat obliquely directed with respect to longitudinal axis of body. Distal part of antrum slightly narrowed and rounded. Ductus equal to posterior apophyses in length, sharply bent as S-shaped, slightly expanded near inception to bursa copulatrix. Indistinctly expressed sclerotized cord in middle of ductus. Bursa copulatrix wide, oval, with two long, almost straight, basally wide and distally narrow signa.

Diagnosis. In the female genitalia, the antrum shape of S. lasani is similar to Stenoptilia aktashiensis, Gibeaux, 1997. These species differ from each other by the shorter ductus bursae that is bent at right angle in relation to the antrum, and also by the large oval bursa copulatrix in S. lasani , while in S. aktashiensis the ductus bursae is long, slightly bent, and the bursa is round. In the male genitalia, S. lasani is also similar to S. aktashiensis by similar shape of the cucullus and by the strongly bent phallus. Unlike in S. aktashiensis, the uncus extends beyond the posterior edge of tegumen in S. lasani . The uncus is also narrower in S. lasani than in S. aktashiensis. The wings of S. lasani are brown-grey, unlike S. aktashiensis, whose wings are noticeably paler. In external characters, the new species is similar to S. veronicae Karvonen, 1932 , but differs by the predominance of grey color in the wings, while in S. veronicae the wings are dark brown.

Flight period: June.

Distribution: Russia: Tuva.

Etymology: The new species is named after Mojmir Lasan from Ljubljana, a prominent specialist in entomology in Slovenia.

Figures

FIGURES 2. Stenoptilia lasani Ustjuzhanin, Rekelj & Kovtunovich sp. nov. 2. Adult (Holotype).

FIGURES 3. Stenoptilia lasani Ustjuzhanin, Rekelj & Kovtunovich sp. nov. 3. Male genitalia (Paratype);

FIGURES 4. Stenoptilia lasani Ustjuzhanin, Rekelj & Kovtunovich sp. nov. 4. Female genitalia (Holotype).

FIGURE 5. Habitat of Stenoptilia lasani sp. nov. Tuva, canyon of Ondum river 800 m. Foto: Martin Česanek.