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Lygosoma pruthi (SHARMA, 1977)

IUCN Red List - Lygosoma pruthi - Data Deficient, DD

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Higher TaxaScincidae, Lygosominae, Scincoidea, Sauria, Squamata (lizards)
Subspecies 
Common NamesE: Pruthi’s (supple) skink 
SynonymRiopa pruthi SHARMA 1977
Lygosoma pruthi — DAS 1996: 46
Lygosoma pruthi — DAS 2003
Lygosoma cf. pruthi — GANESH & ARUMUGAM 2016
Subdoluseps pruthi — FREITAS et al. 2019 
DistributionIndia (Tamil Nadu)

Type locality: Chitteri (= Sitteri), a hill range located near Dharmapuri, in Southern Eastern Ghats.  
Reproduction 
TypesHolotype: ZSI 22393 
DiagnosisDescription: A small and short-bodied skink, with tiny pentadactyle limbs, short and supple trunk and a fairly robust tail. Head slightly wider than neck, neck not evi- dent; trunk short thick and wide; anteriorly adpressed forelimb reaches tympanum; adpressed ipsilateral limbs bent inwards along trunk fail to contact each other by slightly more than one head length; regenerated tail shorter than rest of body (Ganesh & Aengals 2019).

Comparisons: Here L. pruthi is compared with peninsu- lar Indian congeners: L. punctatum, L. albopunctatum (whole of the region), L. guentheri (Western Ghats, East- ern Ghats), L. lineatum (Western Ghats, Coromandel Coast?), L. vosmaeri (Eastern Ghats, Deccan plateau). Lygosoma pruthi can be diagnosed by its higher midbody scale row counts 32-34 (vs. < 28 in all other regional congeners); lower eyelid with a transparent disc (vs. scaly in L. albopunctatum); both manus and pes with 5 digits (vs. 4 digits in manus and / or pes in L. lineatum, L. vosmaeri); proportionally shorter axilla-groin distance 1.2-1.3 times snout-shoulder distance (vs. longer in all other regional congeners); frontal scale subequal to com- bined lengths of frontoparietal and interparietal (vs. frontal distinctly longer in L. punctatum); frontoparietals divided (vs. single in L. vosmaeri, L. lineatum); dorsum with feeble linear series of black dots (vs. a pair of dorso- lateral yellow stripes and bold black spots in L. puncta- tum; pair of obscure dorsolateral yellow stripes in L. guentheri; a distinct series of dorsal stripes in L. linea- tum); lateral body with a dark brownish wash (vs. lateral body without such a colouration in L. punctatum, L. line- atum; with dense patches of white spots in L. albopuncta- tum); tail colour in subadults dull slaty blue (vs. orange red in L. punctatum, L. vosmaeri, L. guentheri; brown in L. albopunctatum, L. vosmaeri) (Ganesh & Aengals 2019). 
Comment 
EtymologyNamed after its collector Dr. Hem Singh Pruthi (1897-1969) an eminent entomologist from the erstwhile ‘Punjab’ (Lal, 1954; Beolens et al., 2011) 
References
  • Beolens, Bo; Michael Watkins, and Michael Grayson 2011. The Eponym Dictionary of Reptiles. Johns Hopkins University Press, Baltimore, USA - get paper here
  • Das, Indraneil 2003. Growth of Knowledge on the Reptiles of India, with an Introduction to Systematics, Taxonomy and Nomenclature. J. Bombay Nat. Hist. Soc. 100 (2-3): 446-502 - get paper here
  • FREITAS, ELYSE S.; ANIRUDDHA DATTA-ROY, PRAVEEN KARANTH, L. LEE GRISMER and CAMERON D. SILER 2019. Multilocus phylogeny and a new classification for African, Asian and Indian supple and writhing skinks (Scincidae: Lygosominae). Zoological Journal of the Linnean Society 186 (4): 1067–1096 - get paper here
  • Ganesh, S. R.; M. Arumugam 2016. Species Richness of Montane Herpetofauna of Southern Eastern Ghats, India: A Historical Resume and a Descriptive Checklist. Russ. J. Herpetol. 23 (1): 7-24 - get paper here
  • Ganesh, S.R. and R. Aengals 2018. On further specimens of the poorly-known Pruthi’s skink Lygosoma pruthi (Sharma, 1977) with an expanded description. Asian Journal of Conservation Biology 7 (2): 128-132
  • Ganesh, S.R.; A. Kalaimani, P. Karthik, N. Baskaran, R. Nagarajan & S.R.Chandramouli 2018. Herpetofauna of Southern Eastern Ghats, India – II From Western Ghats to Coromandel Coast. Asian Journal of Conservation Biology, July 2018. Vol. 7 No. 1, pp. 28-45
  • Sharma R C 1977. A new lizard of the genus Riopa Gray (Scincidae) from Tamil Nadu, India. Records Zool. Survey India 73 (1-4): 41-42 - get paper here
  • Venugopal, P.D. 2010. An updated and annotated list of Indian lizards (Reptilia: Sauria) based on a review of distribution records and checklists of Indian reptiles. Journal of Threatened Taxa 2 (3): 725-738. - get paper here
 
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