Blastobasis trachelista is a moth in the family Blastobasidae.

[2][3] The wingspan is about 13 mm.

The forewings are greyish ochreous, more or less irrorated (sprinkled) with fuscous.

The costal edge is dark fuscous towards the base and the discal stigmata are blackish, with a small additional dot beneath the second.

This article relating to the genus Blastobasis is a stub.