Thursday, June 19, 2014

[Herpetology • 2014] Lycodon cavernicolus • A Diminutive New Species of Cave-Dwelling Wolf Snake (Colubridae: Lycodon Boie, 1826) from Perlis, northwestern Peninsular Malaysia


Lycodon cavernicolus
Grismer, Quah, Shahrul, Muin, Wood & Azizah 2014
Gua Wang Burma Wolf Snake | photo: Evan S. H. Quah

Abstract
A newly discovered, diminutive, cave-dwelling, lowland species of the colubrid snake genus Lycodon Boie is described from a limestone cave along the Thai-Malaysian border in the state of Perlis, northwestern Peninsular Malaysia. Lycodon cavernicolus sp. nov. is most closely related to L. butleri Boulenger, an endemic, upland, forest-dwelling species from Peninsular Malaysia of the fasciatus group but is separated from L. butleri and all other species of the L. fasciatus group and the closely related L. ruhstrati group by having the combination of 245 (male) and 232 (female) ventral scales; 113 (male) and 92 (female) paired, subcaudal scales; a single precloacal plate; nine or 10 supralabials; 10 or 11 infralabials; a maximum total length of 508 mm (female); a relative tail length of 0.25–0.27; an immaculate venter in juveniles and dark-brown, posterior, ventral scale margins in adults; and dorsal and caudal bands in juveniles white. The discovery of L. cavernicolus sp. nov. adds to a rapidly growing list of newly discovered reptiles from karst regions and limestone forests of Peninsular Malaysia, underscoring the fact that these areas should be studied before they are quarried as they harbor a significant portion of the Peninsular Malaysia’s herpetological diversity.

Keywords: new species, Lycodon, karst, limestone, cave, conservation, endemic biodiversity, Peninsular Malaysia

Etymology. The specific epithet “cavernicolus” is an adjective derived from the Latin caverna meaning “cave” and the Latin cola meaning “dweller of” and refers to this species being a cave-dweller.

Natural history. Both the holotype and paratype were found deep within Gua Wang Burma cave in the state of Perlis, northwestern Peninsular Malaysia. ... Other species of amphibians and reptiles observed in the cave or near the cave entrance were the bufonid Phrynoides aspera, the gekkonids Cnemaspis biocellata, Cyrtodactylus astrum, and C. macrotuberculatus and the colubrid Othriophis taeniurus ridleyi.


Grismer, L. L., Evan S. H. Quah, Shahrul A. M.s., MohD. A. Muin, Perry J. L. Wood & Siti A. M. Nor. 2014. A Diminutive New Species of Cave-Dwelling Wolf Snake (Colubridae: Lycodon Boie, 1826) from Peninsular Malaysia. Zootaxa. 3815(1): 51–67. DOI: dx.doi.org/10.11646/zootaxa.3815.1.3

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