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Scientists Discover New Species of Genus Fejervarya-Fejervarya chiangmaiensis sp. nov. in Northern Thailand

Jan 23, 2017

Species of genus Fejervarya belong to family Dicroglossidae, inhabit in farmland, swaps and other open wet habitats. The genus Fejervarya currently contains 40 species which can be classified into two large groups: the South Asia group and the East and Southeast Asian group. In Thailand, all seven species were recorded.

During a field survey conducted from June to September, 2013, in the farmland of Ban Monjong and Omkoi District in northern Thailand, the research team led by Dr. CHE Jing at Kunming Institute of Zoology of Chinese Academy of Sciences discovered a new species of Fejervarya, which was named Fejervarya chiangmaiensis sp. nov. 

This new species was identified by systematic examination, including morphological, acoustical and phylogenetic analysis. It can be distinguished from other species from quite a few unique morphological characters.

The adult in life has relatively small body size, carries dorsal ground color varies from dark green to dark brown, lateral sides greyish, ventral surfaces of body, head, and limbs whitish-cream. Thin orange-yellowish middorsal vertebral stripe runs from the anterior part of the interorbital space to the vent. It differs from other species also by the presence of dorsal warts and dermal ridges.

Like other species, this new species also emits short and long advertisement call, but the dominant frequencies of the calls are different with those in other species.sp. nov., suggesting that the biodiversity of amphibians in Thailand remains underestimated.

Moreover, to determine its classification status, phylogenetic analysis was carried out based on the mitochondrial 16S rRNA gene fragment.

The results indicate that this new species belongs to South Asian group and forms into a clade together with F. syhadrensis, F. granosa, and F. pierrei.

This study have been published on Zoological Research.

 

Figure: Fejervarya chiangmaiensis 

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