Hydredes yakobsoni Matov & Volynkin

Volynkin, Anton V., Matov, Alexej Yu., Gyulai, Péter & Behounek, Gottfried, 2014, A revision of the genus Protarchanara Beck, 1999 with description of a new genus and three new species (Lepidoptera, Noctuidae, Xyleninae), Zootaxa 3755 (2), pp. 165-178 : 166-167

Hydredes yakobsoni Matov & Volynkin , sp. n.

( Figs 1–4 , 31, 32 , 47 )

Type material. Holotype: male, [SE Kazakhstan, Almaty region, Tien Shan Mts., Semirechje] Semirech. area, Sary-Togoi tract on the Charyk river, 2.vii.1907, A. Yakobson leg. [in Russian], Tapinostola nov. sp., S. Tshetverikov det. Slide 0038 Matov (Coll. ZISP). Paratypes: 1 male, 1 female, Kazakhstan, Prov. Almaty, 12 km NW of Temerlik, Temerlik canyon, 1000 m, N 43°21; E 079°09', 27.v.2006, leg. Balázs Benedek (Coll. GRB); 1 female, Kirgisia, Naryn region, Kara Kul, 1050 m, 12.vi.1996, leg. Pliutsh (Coll. PGM). Slides RL 10727m Ronkay (male), RL10728f Ronkay, 3278f Gyulai (females).

Diagnosis. The new species is close to H. praecipua and H. shchetkini but externally differs from them by pale, monotonous colouration of forewings and shape of postmedial line forming an obtuse angle with inner margin of wing and angled near the costal margin. The male genitalia of H. yakobsoni differ from H. praecipua by wider juxta, more rounded and more separated cucullus, longer and broader vesica; from H. shchetkini by broader valva with more separated cucullus and stronger, shorter, less pointed cornutus with stronger sclerotised basis in the vesica; from H. delattini by larger, more separated cucullus and the presence of only a single cornutus in the vesica. The female genitalia of H. yakobsoni differ from H. shchetkini by longer apophyses anteriores, broader antrum and smaller, slightly asymmetric U-shaped sclerotised plate of appendix bursae.

Description. Adult ( Figs 1–4 ). Wingspan 26–29 mm, length of forewing 11–13 mm. Head and palpi greyishbrown, palpi short, upcurved. Forewing short, triangular. Ground colour of forewing monotonous pale greyishbrown-ochreous with slight light brownish suffusion in the marginal field. Pattern diffuse. Antemedial line reduced, present as dark blackish diffusion. Postmedial line thin, diffuse, blackish, direct, form an obtuse angle with inner margin of wing and angled near the costal margin. Terminal line diffuse, thin, blackish, wavy. Cilia short, pale greyish-brown. Ground colour of hindwing monotonous grey brown, basally paler, in the marginal field is somewhat darker shaded. Cilia is lighter, pale. Male genitalia ( Figs 31, 32 ). Uncus moderately long, thin, curved, apically pointed. Tegumen short, penicular lobes relatively small, rounded. Juxta wide, pentagonal. Vinculum short, U-shaped. Valva elongate, narrow; clavus smooth; costa weakly sclerotised; costal process long, thin, apically pointed, form an acute angle with costa. Cucullus small, rounded, hardly separated; corona present. Aedeagus moderately long, distally slightly curved; vesica membranous, broad, dorsally projected, its distal part with large, robust, claw-like cornutus. Female genitalia ( Fig. 47 ). Ovipositor weakly sclerotised, pointed. Apophyses anteriores and posteriores thin, long. Antrum very broad, with thin sclerotised margin. Ductus bursae short, membranous, its anterior part sclerotised. Corpus bursae very long, narrow, membranous, its posterior part sclerotised. Appendix bursae broad, bulbous, strongly sclerotised, ventrally with strongly sclerotised slightly asymmetric U-shaped plate.

Distribution. The new species is known from the Tien Shan mountain massif.

Etymology. The species name is dedicated to A.G. Yakobson who collected the holotype.

Figures

FIGURES 1 – 10. Hydredes spp., adults. 1, H. yakobsoni, holotype male, Semirechje (ZISP); 2, H. yakobsoni, paratype male, SE Kazakhstan, Almaty Region (GRB); 3, H. yakobsoni, paratype female, same locality (GRB); 4, H. yakobsoni, paratype female, Kyrgyzstan, Naryn region (PGM); 5, H. praecipua, holotype male, North Caucasus, Daghestan (ZMMU); 6, H. shchetkini, holotype male, Tajikistan (PGM); 7, H. shchetkini, paratype male, Tajikistan (PGM); 8, H. shchetkini, paratype female, Tajikistan (PGM); 9, H. shchetkini, paratype female, Tajikistan (ZISP); 10, H. delattini, holotype male, Iran, Shiraz (BMNH) (photo by A. Giusti).

FIGURES 31 – 36. Hydredes spp., male genitalia. 31, H. yakobsoni, holotype, Semirechje, slide 0038 Matov; 32, H. yakobsoni, paratype, SE Kazakhstan, slide RL 10727 m L. Ronkay; 33, H. shchetkini, holotype, Tajikistan, slide 1376 P. Gyulai; 34, H. shchetkini, paratype, slide 988 m P. Gyulai; 35, H. praecipua, holotype, slide 10439 Hacker (after Hacker 2001); 36, P. delattini, holotype, Iran, Shiraz, slide Wiltshire 477 (photo by A. Giusti).

FIGURES 43 – 52. Hydredes and Protarchanara spp., male (Figs 43 – 46) and female (Figs 47 – 52) genitalia. 43, P. mythimnoida, paratype, SE Kazakhstan, slide 6755 m Z. Varga; 44, P. brevilinea brevilinea, W Siberia, prep Volynkin; 45, P. brevilinea impudica, lectotype, slide 12127 GB Behounek; 46, P. brevilinea impudica, Russian Far East, prep. Matov; 47, H. yakobsoni, paratype, SE Kazakhstan, slide RL 10728 f L. Ronkay; 48, H. shchetkini, paratype, slide 1377 f P. Gyulai; 49, P. abrupta, SW Mongolia, slide AV 0755 Volynkin; 50, P. mythimnoida, paratype, SW Kazakhstan, slide 623 f P. Gyulai; 51, P. brevilinea brevilinea, W. Siberia, prep. Volynkin; 52, P. brevilinea impudica, paralectotype, slide 12153 GB Behounek.