Cyana watsoni Hampson, 1897

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: 31-33

publication ID

publication LSID


persistent identifier

treatment provided by


scientific name

Cyana watsoni Hampson, 1897

stat. rev.

Cyana watsoni Hampson, 1897   , stat. rev.

( Figs 84–87 View FIGURES 80–87 , 196 View FIGURES 194–196 , 264 View FIGURES 262–267 )

Cyana watsoni Hampson, 1897   , Journal of the Bombay Natural History Society 11: 296 (Type licality: “Khásis,”).

Type material examined. Lectotype (designated herein): ♂ ( Fig. 84 View FIGURES 80–87 ), printed label “Khasis 96–246” / printed label “Khasis. Nat. Coll.” / handwritten label “ Cyana Watsoni   type ♂. Hmpsn.” / printed round label with a red circle “Type” / printed label with a unique identifier “NHMUK010597910” (Coll. NHMUK); paralectotypes: 2 ♀, Upper Burma III.93 E.Y. Watson (Coll. NHMUK).  

Other material examined. ASSAM: 1 ♂, Assam ( Coll. NHMUK)   ; 2 ♀, NE India, Assam, Nameri Nat. Park , 40 km N Tezpur, 150 m, 27°20’N, 93°15’E, 24.VII–2.VIII.1997, leg. Sinjaev & Murzin (Coll. MWM / ZSM) GoogleMaps   ; MEGHALAYA: 1 ♂, Khasis , VIII.1894, Nat. Coll. (Coll. NHMUK)   ; 2 ♂, Khasia Hills, Assam, Nissary ( Coll. NHMUK)   ; 1 ♀, Khasia Hills, Assam ( Coll. NHMUK)   ; 1 ♀, Cherrapunji, X.[18]93, Assam ( Coll. NHMUK)   ; 1 ♀, Cherrapunji, IX.[18]93, Assam ( Coll. NHMUK)   ; 1 ♂, [Meghalaya] Khasis, Nat. Coll. , slide AV20170   ♂ Volynkin ( Coll. ZFMK)   ; 22 ♂, 83 ♀, NE India, Assam, W Meghalaya, Garo Hills, Nokrek National Park, 25°40’N, 91°04’E, 1150 m, 2–13.VII 1997, leg. Afonin & Sinajev, slides MWM 34410 View Materials (♂), MWM 34538 View Materials (♂), MWM 35877 View Materials (♀) Volynkin ( Coll. MWM / ZSM) GoogleMaps   .

Remark. In order to stabilize the nomenclature, here we designate the male specimen from Khasi Hills deposited in NHMUK and labeled as “Type” as lectotype, and fix the species’ type locality as “Khásis”.

Diagnosis. Forewing length is 14–15 mm in males and 17–18 mm in females. Cyana watsoni   has no external differences from C. moelleri   and can be distinguished by the genitalia structures only. The male genitalia of C. watsoni   differ from those of C. moelleri   by their narrower aedeagus and the vesica structure: in C. watsoni   the vesica bears a long transverse band-like cluster of strong spine-like cornuti stretching from the base of the dorsal diverticulum to the vesica ejaculatorius, whereas in C. moelleri   there is a longitudinal band-like cluster of smaller spine-like cornuti stretching from the vesica base to the base of the distal diverticulum, and a subapical bunch consisting of 5–6 spine-like cornuti. The female genitalia of these species are very similar, but in C. watsoni   the ductus bursae is narrower than that of C. moelleri   , the posterior sclerotized section of corpus bursae is more rugose, and the signum is slightly smaller.

Distribution. North East India (Assam and Meghalaya) ( Hampson 1897; Hampson 1900, as part of C. molleri   , missp.), North Myanmar ( Černý & Pinratana 2009, as a part of C. molleri   , missp.) and China (Yunnan) (present study).


Natural History Museum, London


Bavarian State Collection of Zoology


Zoologisches Forschungsmuseum Alexander Koenig














Cyana watsoni Hampson, 1897

Singh, Navneet, Volynkin, Anton V., Kirti, Jagbir Singh, Datta, Harvinder Singh & Ivanova, Maria S. 2020

Cyana watsoni

Hampson 1897