Cyana britomartis N. Singh & Volynkin, 2020

Singh, Navneet, Volynkin, Anton V., Kirti, Jagbir Singh, Datta, Harvinder Singh & Ivanova, Maria S., 2020, A review of the genus Cyana Walker, 1854 from India, with descriptions of five new species and three new subspecies (Lepidoptera: Erebidae: Arctiinae: Lithosiini), Zootaxa 4738 (1), pp. 1-93 : 41

Cyana britomartis N. Singh & Volynkin , sp. nov.

( Figs 109–111 , 208, 209 , 272 )

Type material. Holotype ( Figs 109 , 208 ): ♂, India, Arunachal Pradesh, Dibang valley , 26.X.2017, leg. Navneet Singh (Coll. NZCZSI).

Paratypes: INDIA. SIKKIM: 1 ♀, Sikkim, Mt. Kanchenjunga SE, 27°30’N, 88°20’E, 2000 m, 22–31.VII.1995, leg. E. Afonin & V. Sinjaev ex coll. Schintlmeister (Coll. MWM / ZSM) ; WEST BENGAL: 1 ♂, India, W.B., 2500m, Darjeeling Tigerhill , 2400 m, 13.+ 16.VIII.1985, leg. W. Thomas ”, slide MWM 34445 (♂) Volynkin (Coll. MWM / ZSM) ; 2 ♀, same locality and collector, but 29–31.VIII.1988, slide MWM 34447 (♀) Volynkin (Coll. MWM / ZSM) . NEPAL: 1 ♀, Nepal, Ganesh Himal, 2520 m, near Godlang , 85°17’E, 28°10’N, 13.IX.1995, leg. B. Herczig & Gy. M. László (Coll. MWM / ZSM) ; 2 ♂, Nepal, Langtang , 1950 m, 1.5 km NE Dhunche, 85°18’E 28°06’N, 24.IX.1994, leg. Csorba & Ronkay, slide MWM 34474 (♂) Volynkin (Coll. MWM / ZSM) ; 6 ♂, 1 ♀, Nepal, 2300 m, Mt. Ka- linchok, 5 km W of Bigu, 3.VII.1997, leg. M. Hreblay & K. Csak (Coll. MWM / ZSM) ; 1 ♂, Nepal, 1850 m, Mt. Kalinchok , 8 km E of Barabise, 5.VII.1997, leg. M. Hreblay & K. Csak (Coll. MWM / ZSM) ; 3 ♂, Nepal, 2600 m, Mt. Kalinchok , 2 km N of Tarebhir, 2.VII.1997, leg. M. Hreblay & K. Csak (Coll. MWM / ZSM) ; 1 ♂, C. Nepal, Mt. Annapurna Himal, Poon Hill , 28°34’N, 83°50’E, 2800 m, 12–15.VII.1995, leg. Afonin & Sinajev (Coll. MWM / ZSM) ; 1 ♂, Nepal, Mt. Annapurna Himal, between Nangethanti and Ghorepani , 2600 m, 83°42,5’E, 28°23,5’N, 24.VII.1995, leg. Gy. M. László & G. Ronkay (Coll. MWM / ZSM) ; 1 ♂, Nepal, Annapurna Himal , 1 km NW Chitre, 2300 m, 83°41’E, 28°25,5’N, 21–22.VI.1996, leg. Gy. M. László & G. Ronkay (Coll. MWM / ZSM) ; 1 ♀, Nepal, Sun Kosi-Tal, Kodari , 2000 m, 18–19.VIII.1971, leg. de Freina, Slg. Th. Witt (Coll. MWM / ZSM) ; 1 ♀, East Nepal, Milke Danda, Gupha Pass , 3000 m, 4.VII.1988, leg. Márton Hreblay & Balázs Benedek (Coll. MWM / ZSM) ; 1 ♀, Nepal, 2900 m, Mt. Kalinchok , 3 km SW Kalinchok peak, 30.VI.1997, leg. M. Hreblay & K. Csak (Coll. MWM / ZSM) . CHINA. SICHUAN: 1 ♂, China, Sichuan, Daxue Shan Mts. , 80 km W Mianning, 28°34’N, 102°00’E, 2750 m, 7–8.VII.1999, leg. Sinaev & Plutenko (Coll. MWM / ZSM) ; YUNNAN: 3 ♂, 2 ♀, China, Yunnan, 20 km W Dali, Yunlong , 2570 m, 30.VIII.1998, ex. coll. Dr. Brechlin (Coll. MWM / ZSM) ; 5 ♂, 5 ♀, China, prov. Yunnan, Dali Bai aut. pref. Yunlong , 13 km N of Caojian, Fengshuining Mts., 2460 m, 25.VII.–8.VIII.1999, leg. Dr Ronald Brechlin, slide MWM 34473 (♂) Volynkin (Coll. MWM / ZSM) .

Etymology. In ancient Greek mythology, Britomartis is a goddess of mountains and hunting, who was primarily worshipped on the island of Crete.

Diagnosis. Forewing length is 20–21.5 mm in males and 25–25.5 mm in females. Cyana britomartis is a closest relative of C. divakara , from which it differs by its smaller black discal spots, broader subbasal white strip along the forewing costa, longer subbasal white spot along the anal forewing margin, and larger medial white spot. In addition, male of C. britomartis differs from that of C. divakara by its distal discal black spots well separated from each other. The male genital capsule of C. britomartis is very similar to that of C. divakara , but differs by its slightly narrower juxta, narrower valva with less curved costa, longer distal section of valva, and slightly more robust distal saccular process. The vesica of C. britomartis differs from that of C. divakara by its shorter but much broader dorsal subbasal diverticulum, larger cluster of spinules on the largest medial diverticulum, larger lateral cluster of spinules, and larger distal diverticulum. In the female genitalia, C. britomartis differs from C. divakara by its less sclerotized posterior section of the corpus bursae, and much smaller appendix bursae.

Distribution. The new species is known from North East India (Sikkim, Arunachal Pradesh and north of West Bengal), Nepal ( Kishida 1994, as divakara ) and China (Sichuan and Yunnan) ( Fang 1992; 2000, as divakara ).

Figures

FIGURES 104–111. Cyana spp.: adults. 104, C. sikkimensis, ♂, India, Sikkim (MWM/ZSM); 105, ditto, ♀, India, Sikkim (MWM/ZSM); 106, C. divakara, ♂, India, Sikkim (MWM/ZSM); 107, ditto, ♂, Nepal (MWM/ZSM); 108, ditto, ♀, India, Sikkim (MWM/ZSM); 109, C. britomartis, holotype ♂, India, Arunachal Pradesh (NZCZSI); 110, ditto, ♂, India, West Bengal (MWM/ZSM); 111, ditto, ♀, India, West Bengal (MWM/ZSM).

FIGURES 206–209. Cyana spp.: male genitalia. 206, C. sikkimensis, India, Sikkim, slide MWM 34424 Volynkin; 207, C. divakara, India, Sikkim, slide MWM 34471 Volynkin; 208, C. britomartis, holotype, India, Arunachal Pradesh; 209, ditto, paratype, India, West Bengal, slide MWM 34445 Volynkin.

FIGURES 268–272. Cyana spp.: female genitalia. 268, C. dohertyi dohertyi, India, Sikkim, slide NHMUK010313264 Volynkin (©NHMUK); 269, C. dohertyi eirene, paratype, India, Uttarakhand, slide MWM 35882 Volynkin; 270, C. sikkimensis, India, Sikkim, slide MWM 34428 Volynkin; 271, C. divakara, India, Sikkim, slide MWM 34472 Volynkin; 272, C. britomartis, paratype, India, West Bengal, slide MWM 34447 Volynkin.