Thudaca cymatistis is a moth in the family Depressariidae.

The forewings are ochreous brown, lighter towards the base and costa and with the markings snow white.

There is a streak along the costa from near the base to the middle and an elongate blotch along the costa from beyond the middle to four-fifths, as well as an irregular median longitudinal streak from the base to three-fourths, the lower margin forming quadrate projections at the base, the middle, and the apex.

There is also a white spot on the inner margin at one-third and another at two-thirds, as well as an irregular submarginal streak from the apex to the anal angle.

[2] This article on a moth of the subfamily Hypertrophinae is a stub.