Alfalfa Weevil

Hypera postica

Adult weevils of both species are dark gray and about 0.20 inch long. The legless larva of the alfalfa weevil is about 0.25 inch long when fully grown. It is pale green with a thin white line down the center of the back and has a brown head. Larvae complete their growth in about 3 to 4 weeks. They will then spin a cocoon and pupate either in the leaves of the plant or on the ground.