Ethmia penthica
 Ethmia penthica is a moth in the Ethmiidae family. It is found in southern Mexico.The length of the forewings is 8-9.9 mm. The pattern of the forewings is divided by a sinuate line forming three broad triangulate to nearly U-shaped projections of costal brown into theWhite ground color. The ground color of the hindwings is dark brown but whitish inside the fold. Adults are on wing from late June to August.