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How to Manage Pests

The UC Guide to Healthy Lawns

Masked chafers (white grubs) — Life cycle

Adults emerge from the soil in the late spring to early summer and lay eggs in the root zone. Larvae emerge and go through 2 instars, feeding on roots. Larvae overwinter as third instar larvae and pupate in the spring. There is one generation per year.

Masked chafer pupal cast skin and new adult


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