Lophostethus negus
Diagnostic description:
Similar to Lophostethus dumolinii but smaller, darker and with a purplish tone, forewing margin less crenulated, underside much less heavily marked. Forewing upperside similar to Lophostethus dumolinii but: ground colour darker, more purplish; discal spots smaller, more golden.
Male genitalia: Very similar to Lophostethus dumolinii but: smaller and not so heavily sclerotized; phallus straight.