Cyana amabilis ( Moore, 1877 )

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 : 25-27

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).

Figures

FIGURES 52–67. Cyana spp.: adults. 52, C. catorhoda, lectotype ♂, India, Meghalaya (©NHMUK); 53, ditto, ♂, India, Assam (MWM/ZSM); 54, ditto, ♀, Nepal (MWM/ZSM); 55, ditto, ♂, Thailand (MWM/ZSM); 56, C. bhatejai, ♂, India, Tamil Nadu (MWM/ZSM); 57, ditto, India, Tamil Nadu (MWM/ZSM); 58, C. quadrinotata, lectotype ♂ (©NHMUK); 59, ditto, lectotype ♀ of pallens, Myanmar (©NHMUK); 60, ditto, ♂, India, West Bengal (MWM/ZSM); 61, ditto, ♂, India, Meghalaya (MWM/ ZSM); 62, ditto, ♀, India, West Bengal (MWM/ZSM); 63, C. amabilis, lectotype ♂, India, Andaman Isls (©NHMUK); 64, ditto, ♂, India, M.Andaman Isl. (MWM/ZSM); 65, ditto, ♀, India, M.Andaman Isl. (MWM/ZSM); 66, C. pudens, ♂, Malaysia (MWM/ZSM); 67, ditto, ♀, Malaysia (MWM/ZSM).

FIGURES 188–190. Cyana spp.: male genitalia. 188, C. quadrinotata, India, West Bengal, slide MWM 34400 Volynkin; 189, ditto, India, Meghalaya, slide MWM 34401 Volynkin; 190. C. amabilis, India, M. Andaman Isl., slide MWM 35683 Volynkin.

FIGURES 252–257. Cyana spp.: female genitalia. 252, C. peregrina, India, Tamil Nadu, slide NHMUK010315745 Volynkin (©NHMUK); 253, C. catorhoda, Nepal, slide MWM 34552 Volynkin; 254, C. bhatejai, India, Tamil Nadu, slide MWM 34399 Volynkin; 255, C. puella puella, India, Uttarakhand, slide MWM 34404 Volynkin; 256, C. quadrinotata, India, Meghalaya, slide MWM 34406 Volynkin; 257, C. amabilis, India, M. Andaman Isl., slide MWM 35684 Volynkin.

FIGURES 173–175. Cyana spp.: male genitalia. 173, C. pudens, W Malaysia, slide MWM 35685 Volynkin; 174, C. subornata, Sri Lanka, slide AV4653 Volynkin; 175, C. linatula, India, Tamil Nadu, slide MWM 34510 Volynkin.

FIGURES 246–251. Cyana spp.: female genitalia. 246, C. pudens, Malaysia, slide MWM 35686 Volynkin; 247, C. subornata, Sri Lanka, slide NHMUK010315746 Volynkin (©NHMUK); 248, C. linatula, India, Tamil Nadu, slide AV4650 Volynkin; 249, C. obliquilineata, India, Meghalaya, slide MWM 35693 Volynkin; 250, C. rudloffi, paratype, India, M. Andaman Isl., slide MWM 35679 Volynkin; 251, C. dudgeoni, India, West Bengal, slide MWM 34416 Volynkin.