Clover hay-Lesser clover leaf weevil

Hypera nigrirostris

Pest description and crop damage Green or brown weevils about0.125 inch long. Larvae feed under the basal leaf sheath, tunnel in the stem, and feed on florets in developing flowers. This is seldom a pest. When it is in an area, it seems to prefer red and alsike clover.

Management-chemical control

  • malathion (Drexel Malathion 5EC) at 0.94 to 1.25 lb ai/A. PHI 0 days. Limit 2 treatments per cutting. Retreatment interval 14 days. REI 12 hr. Do not apply more than 2.5 lb ai per acre per calendar year.