Three additional lizard (Squamata: Sauria) records for Mizoram, India
H.T.Lalremsanga 1, Lalmalsawma Khawlhring 2 & Lalrotluanga 3
1,3Department of Zoology, 2 Department of Forestry,
Mizoram University,Aizawl, Mizoram 796012, India
Email: 1 htlrsa@yahoo.co.in, 3 mskholhring@gmail.com
Date of
publication (online): 26 February 2010
Date of
publication (print): 26 February 2010
ISSN 0974-7907
(online) | 0974-7893 (print)
Editor: Indraneil Das
Manuscript
details:
Ms # o2246
Received 26 June
2009
Final received
18 August 2009
Finally accepted
03 December 2009
Citation: Lalremsanga, H.T., L. Khawlhring& Lalrotluanga (2010). Three additional lizard (Squamata: Sauria) records for
Mizoram, India. Journal of Threatened Taxa2(2): 718-720.
Copyright: © H.T. Lalremsanga, Lalmalsawma Khawlhring & Lalrotluanga2010. Creative Commons Attribution 3.0 UnportedLicense. 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:Lalmalsawma Khawlhring thanks the Department of Biotechnology (DBT),
New Delhi for Junior Research Fellowship (JRF) and Dr. Kalidas Upadhyaya, Principal Investigator, Department of
Forestry, Mizoram University for support. We also thank AbhijitDas, Division of Herpetology, Aaranyak, Guwahati, Assam for help in identification. We thank Prof. G.C. Jagetia, HOD of Zoology, MizoramUniversity for laboratory facilities.
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Few herpetofaunal inventories have been conducted in Mizoram. Pawar & Birand (2001) documented 22 species of lizards from Dampa Tiger Reserve, NgengpuiWildlife Sanctuary and Palak Lake, in the state. Ramanujam & Harit (2002) recorded eight species of lizards from
Mizoram. Recently, the State Fauna Series by Zoological Survey of India, by
Mathew (2007) enumerated 22 species of lizards from Mizoram. The species reported by earlier workers
represented only five families, Agamidae, Gekkonidae, Lacertidae, Scincidae and Varanidae (Table
1). We collected three additional
species - Calotes maria, Calotes mystaceus and Ophisaurus gracilis which were not recorded previously from
Mizoram (Image 1). Ophisaurus gracilis (Family Anguidae)
represents a new family for the state.
For each
specimen, selected morphometric measurements were
made to the nearest 0.01mm with dial calipers (MitutoyoTM
series No. 505-671). Morphometricand meristic characters (Table 2) largely follow
those of Zug et al. (2006). The
specimens were preserved in 8% buffered formalin and catalogued as voucher
specimens in the museum of Zoology Department, Mizoram University.
1. Calotes maria Gray, 1845 (Image 2)
Family: Agamidae
The individual
was sighted and collected at 1250hr on 27 March 2008, in the outskirt of Selam Village at a geographical location of 23048’21.9”N
& 93017’42.3”E, 1,583m, inside the area of LengtengWildlife Sanctuary (80km2), Champhai District, about
150km to the northeast of Aizawl. While surveying the floral diversity of Lengteng Wildlife Sanctuary, the specimen was found on the
roadside resting on the branch of Glochidion khasicum (Euphorbiaceae), at a height of 2m from the ground. Photograph of this individual at the
microhabitat is presented (Image 2). The
forest type is sub-tropical semi-evergreen, corresponding to the sub-tropical
hill forest (Champion & Seth 1968) of Mizoram. The floral community of the collection site
is dominated by the herb Ageratum adenophorum and
patches of Maesa indica, and Eurya cerasifoliaare also found. Trees of Quercus leucotrichophora,Lithocarpus dealbata, Schima wallichii, Lyonia ovalifolia and Vaccinium sprengelii also
occur.
The specimen was
kept in captivity alive for four days for behaviouralstudies. In the absence of sunlight,
ventral side and flanks became light brown with the green colourpersisting on the dorsum. In sunlight
the whole body colour restored to bright green. In captivity, the individual preferred
crickets though offered house-flies, moths and grasshoppers. The specimen was euthanized, preserved and
catalogued as MZU/ZOO/R-034 in the Museum of the Zoology Department, Mizoram
University.
This record
extends the range by ca. 240km, southeast from the KhasiHills in Meghalaya, with the possibility of occurrence in the contiguous hill
ranges.
2. Calotes mystaceus Duméril & Bibron, 1837 (Image
3)
Family: Agamidae
An individual Calotes mystaceus was
observed perching on the branch of Pinus kesiya, about 3m above the ground at the secondary
forest area of Zotlang (23028’23.5’’N & 93019’59.2”E,
1,500m), Champhai Town, ChamphaiDistrict on 26 May 2008 around 1600hr. It was collected and kept for observation in captivity for two weeks in
the departmental terrarium. The lizard
remained greyish-brown colourinside the shaded terrarium, the head and anterior portion of the trunk turned
to bright blue colour within five minutes after
exposure to the sun. The animal was
later preserved and catalogued as MZU/ZOO/R-038. Three more specimens, MZU/ZOO/R-039,
MZU/ZOO/R-040 and MZU/ZOO/R-041 were collected from the same area during the
month of February in 2009. Other agamids found in sympatry are Calotes jerdoni andCalotes versicolor.
3. Ophisaurus gracilisGray, 1845 (Image 4)
Family: Anguidae
While surveying
the herpetofauna of AizawlCity, around 0730hr on 19 May 2008, a limbless lizard (MZU/ZOO/R-035) was seen
basking in the sun inside the mixed plantation area of Brassica campestris, Acacia pennata,Trevesia palmata andCurcuma longa at Mualpui(23043.081’N & 92043.668’E; 802m), Aizawl where
the atmospheric air temperature and relative humidity were 250C and 74%,
respectively. We were informed that
another specimen was killed the previous day by the local people the remains
were salvaged from the leaf litter 10m away from the spot of occurrence of the
first sample. It was preserved and
catalogued as MZU/ZOO/R-036. On 22 May
2008 another specimen (MZU/ZOO/R-037) was collected from the same
locality. All of them were identified asOphisaurus gracilis. The dorsal and ventral scale rows for each
specimen were 16 and 10, respectively. The specimen MZU/ZOO/R-035 was kept in captivity for 64 days (19 May to
22 July 2008) to study behaviour and feeding
habits. The saurian fauna of this area
include Calotes versicolor,Cosymbotus platyurus, Eutropis macularia, Eutropis multifasciata, Gekko gecko, Hemidactylus frenatus, Hemidactylus garnoti, Ptyctolaemus gularis and Sphenomorphus maculatus.
Discussion
These records
are of interest for extending their distribution southwards in northeastern
India. It is noteworthy that none of these
species are common lizards. Local
sources informed that Calotes mystaceus is common in ChamphaiTown area, while Ophisaurus gracilis was seen occasionally and Calotes maria was rare.
References
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& S.K. Seth (1968). A Revised Survey
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