Evergestis unimacula

Evergestis unimacula, the Large-spotted Evergestis Moth, is a moth in the Crambidae family. It was described by Grote and Robinson in 1867.^[1] It is found in North America, where it has been recorded from Georgia, Illinois, Indiana, Iowa, Maryland, Michigan, North Carolina, Ohio, Oklahoma, Ontario, Pennsylvania, Quebec, Tennessee and West Virginia.^[2] Strays have been recorded from Florida.

The wingspan is 18-22 mm. The forewings are dark greyish-brown with a pale patch along the outer half of the costa, as well as a small pale discal spot in the lower half of the wing and a dark terminal line. The hindwings are similar in colour, but have a more diffuse pale patch. Adults are on wing from May to August.

Etymology

The species name is derived from Latin unimacula (meaning one spot).^[3]

References