Oidaematophorus eupatorii (FERNALD, 1891)

Canada, USA, Mexico, Guatemala, Costa Rica, Panama

Left valve with curved saccular process of 5/9 of valve length. Right valve with small, acute saccular knob, followed by small rod. The wing pattern is bright, with well demarcated spots, less seen in other species in the genus.

Oidaematophorus eupatorii