About Ophiusa trapezium (Guenée, 1852)
This moth species has a wingspan of 66 millimeters. Its head and thorax are bright rufous, while the shaft of its antennae is whitish, and its abdomen is brownish fuscous. Its forewings are bright rufous, suffused with purple coloring from the wing base out to the postmedial line, and also beyond the submarginal line. It has an outwardly oblique antemedial line that joins the obliquely waved postmedial line at the inner margin. The reniform spot has a rufous outline. There is a double straight submarginal line, and a dentate marginal line on the forewings. Its hindwings are brownish ochreous. The inner area of the hindwings is covered in fuscous hair, and a broad, diffused fuscous submarginal band is present. The ventral side of the moth is brownish ochreous. On the ventral side of the forewings, there is a fuscous-colored cell and a fuscous submarginal patch. The larvae of this species have been successfully reared on plants from the genus Melaleuca, which belongs to the family Myrtaceae, and on Melastoma malabathricum, which belongs to the family Melastomataceae.
