Donus zoilus
Pest description and crop damage This is the largest weevil found in legume fields. The full-grown larva is about 0.5 inch long and has a brown head. The body is green or yellowish-green, shading to pink at the tip of the abdomen, with a white or pinkish line down the center of the back. Larvae feed on buds and leaves.
Management-biological control
During cool, moist spring weather, a fungal disease usually attacks larvae, naturally controlling them. Some studies have shown that providing a diverse plant ecosystem in surrounding areas encourages natural enemies of clover leaf weevils such as parasitoid wasps leading to lower pest pressure.
Management-chemical control
No insecticides, registered or otherwise, are effective for controlling this pest.