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How to Manage Pests

The UC Guide to Healthy Lawns

Billbugs - life cycle

Adult females insert their eggs singly into feeding holes in turfgrass stems. Eggs hatch about 6 to 8 weeks after adults first appear. Larvae feed in stems, crowns, and roots and then pupate in the soil. Adults emerge the following spring to repeat the cycle. There are no males. There is only one generation a year.
Billbug larva

Statewide IPM Program, Agriculture and Natural Resources, University of California
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