Thiotricha synacma is a moth of the family Gelechiidae. It was described by Edward Meyrick in 1918. It is found in Assam, India.[1]
The wingspan is about 12 mm. The forewings are fuscous with ochreous-white markings. There is a broad pointed median streak from the base to near the apex and a streak from beneath this before the middle to the tornus. A line is found along the costa from the middle to a short oblique line from the costa terminating above the apex of the median streak and there is a very oblique line from above the tornus to beneath the apex of the median streak. A wedge-shaped streak is found along the lower half of the termen and a fine transverse blue-leaden-metallic line just beyond these markings before the apex. The apex is ochreous tinged and there is a small black apical dot preceded by a minute violet-silvery dot. The hindwings are grey, paler in the disc anteriorly.[2]