Crocanthes thermobapta is a moth in the Lecithoceridae family. It was described by Lower in 1920. It is found in Australia, where it has been recorded from Queensland. The wingspan is 12-14 mm. The forewings are pale yellow, strongly suffused and streaked with orange and with a very broad dull purplish-fuscous oblique fascia, from the middle of the costa to the middle of the dorsum, the anterior edge limited by a fine fuscous, nearly straight line, the posterior edge dentate, the lowest dentation continued for a short distance along the fold. There is a fine fuscous line along the termen. The hindwings are pale yellowish-orange.