 The large upper incisors are orthodont, with their cutting edge at about a right angle to the upper molars, and heavily pigmented with orange.Those of "T. hylophilus" are narrower, less procumbent, and less pigmented.The orthodont upper incisors suffice to distinguish "T. ucucha" from all other members of the genus but "T. australis" and "T. daphne", which have much shorter and narrower incisors.