Identification:
Examined Specimens: Two male specimens: TYT 2010.22 (SVL 38.94 mm), TYT 2010.24 (SVL 37.63 mm); two female specimens: TYT 2010.21, TYT 2010.25 collected in June 2010; one male specimen: TYT 2011.5 (SVL 41.26 mm) and two female specimens: TYT 2012.38 (SVL 57.79 mm), TYT 2012.40 (SVL 55.09 mm). Head longer than wide (HL 16.21-22.83 mm, HW 13.43-20.45 mm); snout long, slightly flattened, with vomerine teeth; eyes large (ED 4.81-7.59 mm); tympanum distinct, round (TD 2.81-3.81 mm); interorbital distance wider than internarial distance and upper eyelid width (IOD 5.32-7.78 mm, IND 4.32-6.23 mm, UEW 3.21-6.61 mm); no supratympanic or dorsolateral folds; vomerine teeth present.
Fingers lack webbing, finger tips possess small adhesive discs, and have transverse grooves. Toes have almost fully webbed feet. Skin is slightly rough, the posterior dorsal surface has small tubercles; males have nuptial pads and external vocal sacs. The dorsal surface is gray-brown with brown or green spots; the edge is white; the legs have black transverse stripes; the webbing is gray; the belly is pale yellow.
Biology, Ecology:
Individuals were found in the evening in flowing streams (Tuyen II stream, Tuyen III stream, Ba Bep stream). They were observed sitting on rocks in the streambed or on the ground near the stream.
Distribution:
Vietnam: Newly discovered species in the Tay Yen Tu Nature Reserve; no other records exist outside this area to date.