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Tylototriton taliangensis measures 186-220 mm in total length for males, 194-230 mm for females. Head and body combined are similar in length to the tail. Head is somewhat flat, and of equal length and width. No labial folds. Snout is relatively raised and rectangular in shape. Vomerine teeth rows are relatively long, two rows are in / orientation and meet near the inner nasal bone. Body robust, with a flattened venter. Dorsal skin surface is very rough. An obvious red glandular protrusion is found on each side of the head posterior to the eye. Jugular fold apparent. Legs are relatively long; toes overlap when limbs are adpressed to the flank. There are four unwebbed toes on each forelimb and five unwebbed toes on each hindlimb. A noticeable but short and thin tail fin fold is present. The tail is robust and wide starting from the anus but becomes considerably thinner and weaker towards the tip. Tip of the tail is sharp.
The body and tail are black, with conspicuous red markings present on the glandular protrusion, the tips of toes, and the lower tail fin fold. The venter has a lighter color than the rest of the body.