Caenurgina crassiuscula – Clover Looper

Hodges # 8738

Caterpillar foods: clover, grasses, lupines  (Bugguide)

This species is often difficult to tell apart from Caenurgina erechtea in photos.  I’ve done my best with these photos.  The following characters can help to differentiate them:

C. crassiuscula is very brown, with a brownish ground color, and lack white edging to the outer margin of the PM blotch-line.
On male C. erechtea the AM line inner boundary is curved outward well before the inner margin.  In C. crassiuscula it is pretty straight.  (Jerry Fauske)