Blastobasis acarta is a moth in the family Blastobasidae. It was described by Edward Meyrick in 1911. It is found on the Seychelles,[1] where it is known from the islands of Aldabra, Aride, Mahé and Silhouette.[2]
This species has a wingspan of 15–16 mm, the head is whitish ochreous mixed with pale fuscous. The forewings are greyish ochreous irregularly tinged with purple brownish and speckled with dark fuscous. A spot towards base of costa and an angulated transverse line of dark fuscous before the middle.[3]