It attacks asparagus by chewing shoots and reducing plant to stubble.
Adults injure young asparagus shoots.
After leaves come out beetles and slug-like larvae gnaw stems and devour leaves and thus cause a reduced supply of shoots the next season by robbing the root system of food materials. Asparagus is the only plant attacked so far as is known. Eggs may be laid on shoots or leaves. Larvae feed for about 2 weeks and pupate in the soil. Generations may be completed in 3 to 8 weeks.