Thiotricha nephodesma is a moth of the Gelechiidae family. It was described by Meyrick in 1918. It is found in India (Assam). The wingspan is about 9 mm. The forewings are pale brownish-oehreous with a very broad irregular-edged suffused somewhat oblique transverse dark fuscous band before the middle and a very fine fuscous median longitudinal line from this to near the apex. The apical third of the wing is suffused whitish and the costal and terminal edges are shortly fuscous about three-fourths. The hindwings are grey.