Sphenarches is a genus of moths in the family Pterophoridae.

Species in this genus are distributed in regions with pantropical climates, and are also found in Japan and southern Canada.

The species's validity is uncertain; it may be a synonym of Sphenarches nanellus.

The type specimen of this species is in poor condition, and more information has not been found.

This article on a moth of the family Pterophoridae is a stub.