Cyana bianca ( Walker, 1856 )

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: 9

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Cyana bianca ( Walker, 1856 )


Cyana bianca ( Walker, 1856) 

( Figs 11, 12View FIGURES 11–18, 165View FIGURES 164–166, 238View FIGURES 234–239)

Bizone Bianca Walker, 1856  , List of the Specimens of Lepidopterous Insects in the Collection of the British Museum 7: 1684 (Type locality: “Hindostan”).

Type material examined. Holotype (by monotypy) ( Figs 11View FIGURES 11–18, 165View FIGURES 164–166): male, “Hind[ostan]” / “ Bizone bianca  type Walk.” / “ Bianca n.” / “Type” / “226” / “501” / “A. Walker’s type of Bizone bianca  7-1684” / “TYPE (printed) LEP.: No. 429 Bizone bianca Walker  (handwritten) HOPE DEPT. OXFORD (printed)” (Coll. OUMNH).

Other material examined. MEGHALAYA: 1 ♂, India, Meghalaya , Dangar, 30.VIII.2014, leg. H.S. Datta (Coll. NZCZSI)  ; 2 ♀, NE India, W Meghalaya, Umran , 33 km N Shillong, 26°06’N, 92°23’E, 800 m, 14–23.VII.1997, leg. Sinjaev & Afonin, slide ZSM Arct. 2019GoogleMaps  - 332 ♀ Volynkin (Coll. MWM / ZSM)  .

Diagnosis. Forewing length is 13–14 mm in males and 18–18.5 mm in females. Cyana bianca  is most similar externally to C. juliettae  (illustrated by Volynkin & Černý (2019b): fig. 2) and C. carmina  ( Figs 13, 14View FIGURES 11–18), but can be distinguished by the black outer margin of its antemedial line being arcuate, while in C. juliettae  and C. carmina  that is curved outwards at the anal wing margin. In addition, in C. bianca  this margin is stronger curved at costa than that of C. carmina  . In the male genital capsule, the valva apex is slightly broader than that of C. juliettae  (illustrated by Volynkin & Černý (2019b): fig. 14) and C. carmina  ( Figs 166View FIGURES 164–166, 167View FIGURES 167–169). The vesica shape of C. bianca  is most similar to that of C. carmina  , but differs by its smaller dorsal medial diverticulum, narrower dorsal distal diverticulum covered with weaker spinules and granulation, larger apical diverticulum, smaller lateral diverticulum bearing narrower cluster of smaller spinules, and less granulated ventral distal diverticulum bearing smaller patch of spinules. The female genitalia of C. bianca  are similar to those of C. carmina  ( Figs 239View FIGURES 234–239, 240View FIGURES 240–245), but differ by the longer apophyses anteriores and longer sclerotized anterior section of ductus bursae.

Distribution. India (Meghalaya) ( Walker 1856; Volynkin & Černý 2019b).


Bavarian State Collection of Zoology














Cyana bianca ( Walker, 1856 )

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


Bianca Walker 1856