Eucorma Jordan

Type species: obliquaria Fabricius.

This genus contains species where both sexes are highly mimetic, the type species and intercisa Walker (Java) resembling agaristine noctuids in genera such as Mimeusemia Butler, and the more easterly species, millioniaoides Kishida & Endo (Palawan), emphaena Jordan (Sulawesi) and hampsoni Holland (S. Moluccas) resembling ennomine geometrids in the genus Milionia Walker. All have a black ground colour, but the first two have a cream band to the forewing and an extensive orange basal area to the hindwing, and the last three have orange bands on the forewing and, apart from hampsoni, the hindwing with areas of bluish iridescence elsewhere.

The male genitalia of the type species were illustrated by Kishida (1996). The uncus is vestigial. The valves are deep, short, rather ear-like, with massively sclerotised spines arising from the inner margin of the sacculus. The eighth tergite is also strongly sclerotised, with a pair of robust but blunt spines extending from its posterior margin.