A review of the genus Cyana Walker, 1854 from India, with descriptions of five new species and three new subspecies (Lepidoptera: Erebidae: Arctiinae: Lithosiini)
Author
Singh, Navneet
Author
Volynkin, Anton V.
Author
Kirti, Jagbir Singh
Author
Datta, Harvinder Singh
Author
Ivanova, Maria S.
text
Zootaxa
2020
2020-02-18
4738
1
1
93
journal article
23994
10.11646/zootaxa.4738.1.1
f0ba3254-67ac-4d33-a341-c71ff16c05f0
1175-5326
3672439
B29D53CB-4E0D-4A25-97EC-ED983730E8B2
Cyana bianca
(
Walker, 1856
)
(
Figs 11, 12
,
165
,
238
)
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 11
,
165
): 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.
2019
-
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, 14
), 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 166
,
167
). 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 239
,
240
), but differ by the longer apophyses anteriores and longer sclerotized anterior section of ductus bursae.
Distribution
.
India
(
Meghalaya
) (
Walker 1856
;
Volynkin & Černý 2019b
).