Dyspessa skrylniki Yakovlev & Shapoval, 2023

Yakovlev, Roman V., Naydenov, Artem E., Shapoval, Nazar A., Shapoval, Galina N. & Pavlova, Polina D., 2023, Two new Dyspessa Hübner (Lepidoptera, Cossidae, Cossinae) from Central Asia, Ecologica Montenegrina 70, pp. 77-82 : 79-81

Dyspessa skrylniki Yakovlev & Shapoval , sp. n.

https://zoobank.org/ urn:lsid:zoobank.org:act:96E008AE-8DE9-419B-9F57-F8DDFB20533C

Figs 5−6 , 8−9

Material. Holotype, male, W. Tajikistan, Gissar Mts. , Anzob pass, 3345 m, 39°4ʹ55.15ʹʹN 68°51ʹ52.14ʹʹ E, 2.vii.2015, leg. Yu. Skrylnik; slide Prozorov 2023/0582 ( ZISP).

Paratypes. 3 females, same locality and data; slide Prozorov 2023/0583 ( RYB) .

Description. Male. Length of fore wing 10 mm. Thorax and abdomen densely covered with coal-black scales. Antenna bipectinate, setae 1.5−2 times longer than antenna stem in diameter; antenna about 2/5 of fore wing in length. Fore wing covered with rare black scales, minor sputtering of ocher scales noticeable along costal edge, at top of discal cell, postdiscally and discally along veins, fringe black. Hind wing covered with rare black scales, small round ocher spot at top of discal cell, fringe black.

Male genitalia. Uncus narrow, pyramidal, sharply narrowing from base to apex, apex triangular; gnathos arms thin, of medium length; gnathos ribbon-like, poorly structured; valve narrow, apically lanceolate, distal half of valve membranous, costal edge of valve (on border between proximal and distal halves) with small semicircular crest with numerous tiny teeth on edge; transtilla process very short, triangular, apex obtuse; juxta tiny, saddle-like, with small notch on abdominal edge and pair of short lamellar lateral processes directed perpendicular to juxta axis; saccus big, semicircular; phallus equal to 2/3 of valve in length, thick, almost straight, proximal half of phallus of uniform thickness, distal half slightly narrowing to apex, vesica aperture spoon-like, about 1/2 of phallus in length, vesica without cornuti.

Female. Length of fore wing 10−11 mm. Antenna with short setae processes, length of process about 1/2 of antenna stem in diameter. Fore wing dark-brown with sputtering of very rare light-grey scales throughout all wing area, without pattern, fringe dark-brown. Hind wing dark-brown, slightly lighter than fore wing, without pattern, fringe dark-brown.

Female genitalia. Ovipositor very long and thin, papillae anales cylindric, transverse oblique notching on edges of ovipositor, posterior apophyses slightly longer than anterior ones, ostium cup-like, membranous, ductus long, membranous, bursa copulatrix bag-like, small, without signa.

Diagnosis. Externally, the new species is similar to the recently described highland species Dyspessa igoripljushtchi Yakovlev & Naydenov, 2022 (Type locality: Tajikistan, Darvaz Mts. , Khaburabot pass), from which it sharply differs in a series of characters :

- the poorly expressed light elements of the fore wing pattern in the male,

- the narrow valve,

- the significantly less developed crest on the costal edge of the valve,

- the significantly bigger saccus.

Distribution. Tajikistan (Gissar).

Etymology. The new species is named after the famous Ukrainian entomologist Yuri E. Skrylnik (Kharkov) who made a significant contribution to the study of the entomofauna of Afghanistan and Tajikistan.

Notes. The holotype arrived for study severely damaged; the specimen is missing the right fore wing.

Figures

Figures 1−6. Adult specimens of Dyspessa: 1. D. milkoi sp. n., Holotype (ZISP); 2. D. milkoi sp. n., paratype, male, S. Kirg.[izia], Fergana Mt. R., Bekechal Ravine, on light, 950 m, 41°32ʹN 72°30ʹE, 4.vi.2008, leg. D. Milko (IBBK); 3. D. milkoi sp. n., paratype, female, Kirgizia, Tash-Kumyr, 600 m, 19.vi.2004, leg. M. Danilevsky (RYB); 4. D. milkoi sp. n., paratype, female, Kyrgyzstan, Toktogul Dam, 41°44ʹN 72°51ʹE, 915 m, 28.vi.2008, P. Ustjuzhanin (RYB); 5. D. skrylniki, Holotype (ZISP); 6. D. skrylniki, paratype, female (RYB). Scale bar = 10 mm.

Figures 7−9. Genitalia of Dyspessa: 7. D. milkoi, Holotype (ZISP); 8. D. skrylniki, Holotype (ZISP); 9. D. skrylniki, Paratype, female. Scale bar = 1 mm.