Just Say No to Abuse Declaring War on Terrorism. However, blister beetles do crop damage and they do it quite well when they gather in great numbers. They tend to stay in weedy areas where there is an abundance of grasshopper eggs since the larval stages love this delicacy. The adults damage the crops, but usually they don't gather in great enough numbers to notice the damage.
Adults are slender oblong beetles with yellow stripes in some form.
Larva are usually found in several stages and all stages have 3 upper body legs. The pupa stage is a stage of darkening, starting with the eyes. Eggs are oblong and yellow. They chew on just about any vegetable especially vine and root crops. They are mostly foliage feeders but will eat flowers as well.