Ypthima
kedarnathensis Singh, 2007 (Lepidoptera: Nymphalidae:
Satyrinae) from the Kumaon Himalaya, India
Peter Smetacek
Butterfly Research Centre, The
Retreat, Jones Estate, Bhimtal, Nainital, Uttarakhand 263136, India
Email: petersmetacek@rediffmail.com
Date
of publication (online): 26 December 2010
Date
of publication (print): 26 December 2010
ISSN
0974-7907 (online) | 0974-7893 (print)
Editor: Arun P. Singh
Manuscript details:
Ms # o2574
Received 16 September 2010
Final received 30 October 2010
Finally accepted 25 November 2010
Citation: Smetacek, P. (2010). Ypthima kedarnathensis Singh,
2007 (Lepidoptera: Nymphalidae:
Satyrinae) from the Kumaon Himalaya, India. Journal of Threatened Taxa 2(13): 1390-1391.
Copyright: © Peter Smetacek 2010. Creative Commons
Attribution 3.0 Unported License. JoTT allows unrestricted use of this
article in any medium for non-profit purposes, reproduction and distribution by
providing adequate credit to the authors and the source of publication.
Acknowledgements: This work was funded by a Rufford Booster Grant, for which I am
grateful to the Rufford Small Grants Foundation, U.K. I am indebted to Manoj Chandran, IFS and Kedar Tokekar,
Pune, for co-ordinates.
The
description of the butterfly Ypthima kedarnathensis Singh, 2007 was based on three specimens taken in the Kedarnath
Musk Deer Reserve, Garhwal, Uttarakhand from two localities within 10km of each
other. It belongs to the Y. sakraMoore group of the genus and is distinguished from the sympatric Y. nikaea Moore mainly by the additional
ocellus on the hind wing between veins 4 and 5, which is conjoined to the large
ocellus in space 5 on the verso surface and is clearly marked on the recto
surface.
The
Lepidoptera of Nainital District, mainly Nainital Town and the Bhimtal Valley,
have been surveyed for over half a century. In 2007 and 2009, Lepidoptera of the southern face of the
Gagar range were surveyed, mainly at 29026’4”N & 79035’40”E. Among other
Lepidoptera, several specimens of the Y. sakra group were recorded. Critical examination of these and other specimens recorded locally
resulted in the following diagnoses.
Material and Methods
A
series of 27 specimens of the Ypthima sakra group in the author’s personal collection was examined. The individuals comprising this series
were collected over the past 37 years in Nainital District of Uttarakhand,
India (Image 1). A single specimen
was taken in Almora District. They
were identified as:
Ypthima nikaea Moore: 23 exs.: Forewing length: 22-25
mm. Expanse (forewing tip to
centre of thorax x 2) = 48-54 mm. Coll. et det. Peter Smetacek.
(a)
Bhimtal, 29021’17”N & 79032’34”E, 1500m, Nainital
District, Kumaon, Uttarakhand: 26.viii.1973 (Ynikaea1), 21.vi.1974 (Ynikaea3),
21.v.1975 (Ynikaea4), 23.v.1975 (Ynikaea5), 05.ix.1975 (Ynikaea6), 16.v.1976
(Ynikaea7), 13.x.1976 (Ynikaea8), 16.v.1982 x 3 (Ynikaea9-11), 12.ix.1983
(Ynikaea12), 08.viii.1991 (Ynikaea13), 29.v.1994 (Ynikaea14), 30.v.1994 x 2 (Ynikaea21-22),
12.vi.1994 (Ynikaea23); (b) Sattal, 29021’09”N & 79031’67”E,
1200m, Nainital District, Kumaon, Uttarakhand 05.vi.1974 (Ynikaea2); (c) Below
Gagar Pass, Maheshkhan, 29024’46”N & 79032’39”E,
2200m, Nainital District, Kumaon, Uttarakhand 29.v.1994 x 6 (Ynikaea15-20); (d)
Kukuchhina, 29050’24”N
& 79027’13”E, 2200m, Almora District, Kumaon, Uttarakhand
6.vi.2010 (Ynikaea24).
Ypthima kedarnathensis Singh (Images 2 & 3): 1 ex.:Forewing length: 23mm. Expanse (forewing tip to centre of thorax x 2) = 50mm.
Leg., coll. et det. Peter Smetacek.
Below
Gagar Pass, Maheshkhan 2200m Nainital District, Kumaon, Uttarakhand, 29.v.1994
(Ykedarnathensis1).
Three
individuals from Bhimtal could not be placed.
Discussion
AlthoughY.
kedarnathensiswas described on the basis of wing pattern, which is notoriously variable in
this sub-family, subsequent comparisons of male genitalia of Y. sakra sakra, Y. nikaea and a paratype of Y. kedarnathensis confirm that Y. kedarnathensis is indeed specifically different from the two former species
(unpublished data).
The
present record of Y. kedarnathensis constitutes an eastward extension to the known distribution of
the species. Of interest is the
fact that it has not been recorded from below 1600m, where butterflies have
been recorded over a period of more than 40 years. It therefore appears to be restricted to the region above
1600m. Like the type locality, the
present locality also has dense subtropical broadleaf forest with Quercus leucotrichophora A. Camus (Fagaceae) and Rhododendron arboreum Smith (Ericaceae) as dominant
species. Singh (2007) recorded his
specimens between 1600 and 1800 m. The present record from 2200m also constitutes an extension to the known
altitudinal distribution of this species.
Singh
(2007) mentioned a wingspan of 40-45 mm for the type material of Y. kedarnathensis. The present
specimen has an expanse of 50mm but this is probably because of difference in
measurements, in that the type material was measured directly from forewing tip
to forewing tip (A.P. Singh pers. comm.) while the specimen examined in the
present study was measured from the forewing tip to the centre of the thorax
and the resulting figure doubled.
For Y. nikaea, Evans (1932) gives an expanse of
45-50 mm. Some specimens examined
in the present study are larger than this, with an expanse up to 54mm.
The
altitudinal distribution of Y. nikaea in the Kumaon Himalaya extends from 1200m to at least 2200m and
probably higher. I have seen them
on Gagar Pass (2400m) but do not have a specimen to support the observation.
Reference
Singh, A.P. (2007). A new butterfly species of the
genus Ypthima Hübner (Nymphalidae: Satyrinae) from Garhwal Himalaya, India. Journal of the Bombay Natural History Society 104(2): 191-194.