Thiotricha eremita is a moth of the Gelechiidae family. It was described by Bradley in 1961. It is found on Guadalcanal. The wingspan is about 13 mm. The forewings are white, with a dull silvery sheen. The markings are varying shades of mouse grey and the anterior edge of the costal margin is mouse grey suffused with fuscous near the base. There is a wedge-shaped outwardly-oblique dash from the costa at four-fifths, dark on the costa becoming lighter and diffuse towards the middle, followed by two short inwardly-oblique dashes on the costa near the apex, the second of these continuing as a weak but moderately thick line to the termen a little below the apex. There is a thick wishbone-shaped marking from a little above the inner margin at about three-fifths, the upper fork curved and reachi