Thiotricha margarodes is a moth of the family Gelechiidae. It was described by Edward Meyrick in 1904. It is found in Australia, where it has been recorded from Queensland.[1]
The wingspan is . The forewings are shining white, with a faint ochreous tinge and a semi-oval leaden-grey spot along the lower half of the termen, edged anteriorly with a dark fuscous line. There are two outwardly oblique dark fuscous lines from the costa towards the apex and a black apical dot, preceded by orange. The hindwings are light grey.[2]