Wikipedia
Procymbopteryx
'Procymbopteryx ' is a genus of moths of the Crambidae family. It contains only one species, Procymbopteryx belialis, which is found in Mexico (Guerrero) and Arizona.
The wingspan is about 17 mm. The forewings are dark greyish-brown. The costa, outer and inner margin are edged with yellowish white. The hindwings are greyish-white, but darker along the outer margin. Adults are on wing from July to August.