Overview of the Megophrys nasuta and a Latest Research about Them

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Megophrys nasuta are light to dark brown on their dorsal surface with cryptic patterns resembling the forest leaf litter. They have two thin, ridged skin fold that run dorsal laterally across the animal's back. Coarsely granular skin with prominent tubercles on the dorsal surface provide further camouflage amongst the forest floor. They also have long, pointed dermal projections on the snout and upper eyelids that resemble horns and from which this frog gets its namesake.
On their ventral side they often have a dark chest and belly with a chin that ranges from a red to an orange coloring. On their chest is a single pair of tubercles. The limbs of Megophrys nasuta are light to dark brown with dark cross bars and their digits have blunt ends. They have no visible tympanum. The eyes are a golden brown complete with vertical pupil.
Megophrys nasuta males range from 70-105mm snout-vent length while females range from 90-125mm snout-vent length. Other than the slight difference in size there are no other sexual dimorphic traits. Behaviorally, however, Males however will “call” on the females in the evening (Bartlett, 1996).

Natural History:
Distribution/range
This species is known from Yala, southern Thailand (Taylor, 1962), throughout Peninsular Malaysia (Berry, 1975; Dring, 1979), Tioman Island, Singapore (Lim and Lim, 1992; Leong, 2000), Sumatra, Bintan, all parts of Borneo and the Natuna Islands. There are several stable populations within it's range countries. It is regularly encountered, and its characteristic call can be heard frequently heard in suitable habitats. It is, however, uncommon in Singapore (Lim and Lim, 1992).

Habitat
Megophrys nasuta inhabits intact, lowland and submontane rainforest, typically in close vicinit...

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...rom southern China, Indochina, Thailand and the Sundaland. By usng 2009 bp of sequence from the mitochondrial DNA genes 12S rRNA, tRNAval, and 16S rRNA the genealogical relationships were drawn amongst 30 named and unnamed taxa. Upon completion of the study it was further supported that the genus Leptobrachium was a monophyletic group which contained two major clades. One clade had three subclades primarily from disjunct regions including Borneo, Peninsular Malaysia and Java, and Thailand. Specifically, the Bornean subclade included one species each from the Philippines and Sumatra. The other major clade was further divided into two subclades, one from Indochina and the other from southern China (Vibrissaphora). The times of evolutionary divergence suggests a history which could not be explained by the geohistory of Southeast Asian major landmasses (Matsui, et al.).

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