Thymistadopsis albidescens is a moth in the family Drepanidae.

[1] It is found in the Indian states of Sikkim and Assam.

Adults are greyish white, the forewings with a black speck at the end of the cell and a postmedial black spot on the costa.

There is an oblique fine waved line from the apex to the inner margin beyond the middle with a black subapical mark on it.

This article on a moth of the subfamily Drepaninae is a stub.