Thiotricha majorella is a moth of the Gelechiidae family. It was described by Rebel in 1910. It is found in Italy, Croatia, Bosnia and Herzegovina, Serbia, Bulgaria and Greece. The wingspan is about 12.5 mm. The forewings are shining white, with ill-defined brownish scales and with a brownish longitudinal streak from the base to the end of the middle cell, leaving the inner margin white. The hindwings are whitish-grey.