Bucculatrix parthenica is a moth of the Bucculatricidae family. It is native to Mexico, but was released in Queensland, Australia, as a biological control agent for Parthenium weeds. The wingspan is about 5 mm. Adults are white and brown. The larvae feed on Parthenium hysterophorus. First and second instar larvae mine the leaf of their host plant, feeding on it from the inside and leaving the upper and lower skin intact. Later instars feed externally on the leaves. Pupation takes place in a white cocoon under a leaf or stem.