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Type: Article
Published: 2020-05-20
Page range: 341–354
Abstract views: 360
PDF downloaded: 173

­A new species of phytotelm breeding frog (Anura: Rhacophoridae) from the Central Highlands of Vietnam

Australian Museum Research Institute, Australian Museum, 1 William Street, Sydney, New South Wales 2010, Australia. Centre for Ecosystem Science, School of Biological, Earth and Environmental Sciences,University of New South Wales, Sydney, New South Wales 2052, Australia.
University of Science, Faculty of Biology and Biotechnology, 227 Nguyen Van Cu, 5 District, Ho Chi Minh City, Vietnam. Vietnam National University Ho Chi Minh City, Linh Trung Ward, Thu Duc District, Ho Chi Minh City.
University of Science, Faculty of Biology and Biotechnology, 227 Nguyen Van Cu, 5 District, Ho Chi Minh City, Vietnam. Vietnam National University Ho Chi Minh City, Linh Trung Ward, Thu Duc District, Ho Chi Minh City.
Institute of Biology, Chemistry and Environment, Vinh University, 182 Le Duan St, Vinh City, Vietnam.
Hong Duc University, 565 Quang Trung Street-Dong Ve Ward-Thanh Hoa City, Vietnam.
Amphibia Anura Gracixalus Southeast Asia Vietnam

Abstract

We describe a new species of phytotelm-breeding rhacophorid frog from central Vietnam. Gracixalus trieng sp. nov. is distinguished from all congeners by a combination of (1) body size medium (37.2–41.4 mm in five adult males), (2) snout rounded in dorsal and lateral views, (3) dorsal surface brown or yellowish with a darker brown interorbital crossbar and inverse-Y shape on the back, (4) throat and chest yellow or yellowish brown with pinkish mottling and belly and ventral surfaces of limbs including hands and feet pinkish, (5) tympanum and supratympanic fold distinct, (6) iris pale gold with darker gold radiating out from anterior and posterior edges of pupil, (7) majority of dorsal body and limb surfaces smooth in adults, with some individuals having sparsely distributed low, irregular tubercles, (8) nuptial pads on fingers I and II in adult males, and (9) eggs deposited as a tightly spaced array of non-pendent eggs on the wall of a phytotelmon. The species occurs in syntopy with G. lumarius. At present, Gracixalus trieng sp. nov. is known only from montane bamboo and evergreen forest (>1700 m) on Mount Ngoc Linh and adjacent peaks; and it is likely to be restricted to high-elevation forest with an estimated geographical distribution of <1000 km2.

 

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