Cyana amabilis (Moore, 1877)

(Figs 63–65, 190, 257)

Bizone amabilis Moore, 1877, Proceedings of the general meetings for scientific business of the Zoological Society of London 1877: 597, pl. 59, fig. 2 (Type locality: “S. Andamans (Port Blair)”).

Type material examined. Lectotype (designated herein) (Fig. 63): ♂, handwritten label “Andaman Isles ♂ (upper side) Deiopeia amabilis ♂ type) Moore (under side)” / printed label “Moore Coll. 94–106” / printed round label with a red circle “Type” / printed label with a unique identifier “NHMUK010597942” (Coll. NHMUK).

Other material examined. THE ANDAMAN AND NICOBAR ISLANDS: 35 ♂, India, Andaman Islands, North Andaman—Mayabunder, 6 km S: Karmatany—Rainforest, 12°50’61”N, 092°56’06”E, 17–21.XI.2000, leg. J.P. Rudloff (Coll. MWM / ZSM); 3 ♂, India, M. Andaman, Rangat— 2.5 km S, 12,2761°N, 92,5623°E, 12– 13.VIII.2001, leg. Jan-Peter Rudloff, coll. Dr. R. Brechlin (Coll. MWM / ZSM); 1 ♂, 4 ♀, India, M. Andaman, Karmatang, 1.5 km E, 12,5072°N, 92,5610°E, 17–22.VIII.2001, leg. Jan-Peter Rudloff, coll. Dr. R. Brechlin, slide MWM 35684 (♀) Volynkin (Coll. MWM / ZSM); 37 ♂, India, M. Andaman, Tugapure— 3 km S, 12,4889°N, 92,4929°E, 14–16.VIII.2001, leg. Jan-Peter Rudloff, coll. Dr. R. Brechlin (Coll. MWM / ZSM); 46 ♂, India, Anda- man Islands, Middle Andaman, Tugapure (Rainfor.), 12°50’72”N, 092°49’29”E, 22–26.XI.2000, leg. J.P. Rudloff, slide MWM 35683 (♂) Volynkin (Coll. MWM / ZSM); 2 ♂, India, Andaman Islands, South Andaman—Bambooflat (Rainfor.), 11°42’82”N, 092°42’02”E, 27–28.XI.2000, leg. J.P. Rudloff (Coll. MWM / ZSM); 3 ♂, India, South Andaman, Havelock, 10.I.2018, leg. H.S. Datta (Coll. NZCZSI); 2 ♂, India, South Andaman, Havelock, 11.I.2018, leg. H.S. Datta (Coll. NZCZSI); 3 ♂, South Andaman, Wandur, 31.XII.2017, leg. H.S. Datta (Coll. NZCZSI); 7 ♂, India, South Andaman, Chidiya Tapu, 29.XII.2017, leg. H.S. Datta (Coll. NZCZSI); 3 ♂, Great Nicobar, Campbell bay, 27.XI.2016, leg. H.S. Datta (Coll. NZCZSI); 2 ♂, Great Nicobar, Gobind Nagar, 25.XI.2016, leg. H.S. Datta (Coll. NZCZSI); 2 ♂, North Andaman, Mayabander, 1.I.2018, leg. H.S. Datta (Coll. NZCZSI).

Remark. In the original description, Moore (1877) mentioned two collections where the material is deposited therefore the existence of syntypes is obvious. In order to stabilize the nomenclature, we designate the male specimen deposited in NHMUK and labeled as ‘type’ as lectotype.

Diagnosis. Forewing length is 9–10 mm in males and 11 mm in females. Cyana amabilis is a closest relative of C. quadrinotata. Nevertheless, it mostly resembles externally C. pudens (Walker, 1862) (Figs 66, 67, 173, 246), but differs from it by the more elongate forewing, broader antemedial line, broader and almost straight postmedial line (in C. pudens that is strongly curved at costa and anal forewing margin), and the not dentate inner margin of the subterminal line. In addition, in males of C. amabilis the inner discal spot is larger, the outer discal spots are connected (those are well-separated in C. pudens), the subbasal line is broader and less curved, and the antemedial line is S-like curved (whereas in C. pudens that is almost straight and only slightly curved at the wing costa). The male genital capsule of C. amabilis differs from that of C. quadrinotata by its larger lateral lobes of vinculum and slightly longer distal section of valva. The aedeagus of C. amabilis is broader than that of C. quadrinotata. The vesica of C. amabilis differs from that of C. quadrinotata by its dorsally broader dorsal diverticulum having short and narrow membranous subdiverticulum, broader ventral subbasal diverticulum, and its larger distal cluster of spinules. The female genitalia of the two species are very similar, but in C. amabilis the laterally prominent sclerotized posterior section of corpus bursae is more rounded, whereas in C. quadrinotata that is more trigonal.

Distribution. India: the Andaman and Nicobar Islands (Arora 1983).