Sitona lineatus
Pest description and crop damage Adults are grayish brown, slender weevils about 0.2 inch long, with a short snout and three parallel lines on the thorax. Adults notch leaf margins. They occasionally defoliate new seedlings, causing serious stand loss.
Management-chemical control
No products are registered specifically to control this pest. However, most products applied to control alfalfa weevil, cutworms, and armyworms also control this pest.