Dichomeris thermodryas is a moth in the Gelechiidae family. It was described by Meyrick in 1923. It is found in Peru. The wingspan is 13–14 mm. The forewings are fuscous speckled ochreous-whitish. The stigmata is moderate, dark brown, the plical beneath the first discal, the second discal transverse. There is a hardly curved denticulate light brownish-ochreous subterminal line, edged posteriorly by dark brown. There is also a marginal series of dark fuscous dots separated with light ochreous around part of the costa and termen. The hindwings are rather dark grey.