Larvae are highly variable but have a green or orange speckled head and anal plate, and yellow or orange horn (often black-tipped or largely blackened).
Often found on plants in the Onagraceae (Evening Primrose Family) and Rosaceae (Rose family).
This caterpillar was feeding on Ozark sundrop plant (aka yellow evening primrose - Oenothera macrocarpa).
Lat: 36.15, Long: -95.99
Spotted on May 22, 2007
Submitted on Jun 3, 2012