Erinnyis stheno (Taxonomy)
Synonymized with Anceryx obscura by Walker, 1856, List Specimens lepid. Insects Colln Br. Mus.8: 226. Reinstated as a subspecies by Clark, 1929, Proc. New Engl. zool. Club11: 26. Treated as a synonym of Erinnyis o. obscura by Bridges, 1993, Cat. Fam. Gen. Spec. Sphingidae of the World: VIII.7. Reinstated as a species by Kitching & Cadiou, 2000, Hawkmoths of the world: 45
Similar to Erinnyis obscura obscura but forewings shorter and broader and, in the males, the median black longitudinal streak is replaced by a transverse sagittate pattern. Similar to Erinnyis obscura obscura but median black longitudinal streak replaced by a transverse sagittate pattern. Similar to Erinnyis obscura obscura, Erinnyis obscura confomis and Erinnyis domingonis but dorsal edge of harpe rounded, lacking a sinuous ridge