We describe a distinctive new species of phytotelm-breeding rhacophorid frog from central Vietnam. Gracixalus lumarius sp. nov. is distinguished from all other rhacophorids in Indochina by a combination of (1) medium body size (adult males 38.9-41.6 mm; adult female 36.3 mm), (2) dorsum brown diurnally and yellow nocturnally, (3) venter pink, (4) tympanum and supratympanic fold indistinct (5) iris dark gold with a dense, relatively uniformly distributed network of black reticulations, (6) dorsum with distinctive white conical tubercles in males, and (7) eggs deposited on wall of a phyptotelm. The new species is known from montane bamboo and montane evergreen forest in Ngoc Linh Nature Reserve in Kon Tum Province, between ~1845-2160 m elevation.
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Article Synopsis
- A new species of rhacophorid frog named Gracixalus trieng sp. nov. has been identified in central Vietnam, distinguished by its medium body size, unique color patterns, and specific physical traits.
- This frog features a brown or yellowish dorsal surface with distinct markings and pale gold irises, and notable characteristics such as smooth skin and nuptial pads on males.
- Gracixalus trieng sp. nov. is found primarily in high-elevation montane forests on Mount Ngoc Linh and is thought to have a limited distribution under 1000 km², coexisting with another species, G. lumarius.
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