Compsolechia siderophaea is a moth of the Gelechiidae family. It was described by Walsingham in 1910. It is found in Mexico (Vera Cruz, Tabasco). The wingspan is 11-15 mm. The forewings are greyish cinereous, profusely sprinkled throughout with whitish cinereous scales, leaving an ill-defined triangular umber-brown costal spot beyond the middle, with a shade of the same colour on the outer portion of the fold, and a straight umber-brown terminal band including the apex, preceded on the costa by an obscure pale ochreous spot. The hindwings are dark umber-brown.