Transtillaspis plagifascia is a species of moth of the family Tortricidae.

It is found in Ecuador in Tungurahua, Azuay and Loja provinces.

The wingspan is 14.5–18 mm for males and 17-23.5 mm for females.

The species name refers to the forewing markings and is derived from Greek plagios (meaning oblique) and Latin fascia (meaning fascia).

This Transtillaspis-related article is a stub.