Idioglossa triacma is a species of moth of the family Batrachedridae.[1] It is known from the Khasi Hills of India.
The wingspan is about 10 mm. The forewings are orange-yellow with a purplish-fuscous-golden triangular blotch at one-third, almost reaching the costa.[2]
The host plant of this species is Commelina benghalensis (Commelinaceae).[3]