Monday, June 30, 2014

[Herpetology • 2009] Gastrophrynoides immaculatus • A New Species of Gastrophrynoides (Anura: Microhylidae): An Addition to A previously Monotypic Genus and A New Genus for Peninsular Malaysia



Gastrophrynoides immaculatus Chan, Grismer, Norhayati, and Daicus, 2009
Tung's Narrow-mouthed Frog

Abstract
A new species of microhylid frog of the genus Gastrophrynoides is described from Gunung Besar Hantu, in the state of Negeri Sembilan, adding a new generic record to the family Microhylidae of Peninsular Malaysia and an additional species to the previously monotypic genus Gastrophrynoides. This new species can be distinguished from its only congener, G. borneensis by having an immaculate, grayish brown dorsum (instead of a spotted one); a longer snout (2.6–3.0 vs. 2.0–2.5 times diameter of eye); and a single, large, oval outer metacarpal tubercle beneath the hand (instead of smaller, paired, rectangular outer metacarpal tubercles in G. borneensis). 
Key words: Gunung Besar Hantu, Gastrophrynoides borneensis, Negeri Sembilan, frog


Comparisons. Gastrophrynoides immaculatus is distinguished from G. borneensis in having an immaculate, grayish brown dorsum as opposed to a spotted dorsum (Figure 2,3); a longer snout (2.6–3.0 vs. 2.0–2.5 times diameter of eye); and a single, large, oval, outer metacarpal tubercle beneath the hand (vs. smaller, paired, rectangular outer metacarpal tubercles in G. borneensis).

Gastrophrynoides immaculatus | Tung's Narrow-mouthed Frog

Etymology. The specific epithet is a latin masculine adjective in reference to the species’ uniformly colored dorsum, which differentiates it from its only congener, G. borneensis. The proposed common name, Tung’s Narrow-mouthed Frog honors Mr. Leong Sung Tung, who discovered this frog and has contributed immensely to the study and knowledge of herpetofauna in Peninsular Malaysia.



Natural History. The type series was found between 800–1400 m elevation in water-filled bamboo cuts not more than 1 m above ground. 
Distribution. Only known from the type locality in Gunung Besar Hantu, Negeri Sembilan (Figure 1).

Chan, K.O., Grismer, L.L., Ahmad, N. and Belabut, D. 2009. A New Species of Gastrophrynoides (Anura: Microhylidae): An Addition to a previously Monotypic Genus and A New Genus for Peninsular Malaysia. Zootaxa. 2124: 63–68.

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