Flea Beetle Tucson AZ

These tiny beetles earn their name by jumping like fleas when disturbed. There are many pest species with varying markings and colorations. The blue-black flea beetle shown here is most common in Tucson.

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Flea Beetle


Flea beetles are tiny, but their distinctive habit of leaping out of harm's way makes them easy to identify.

These tiny beetles earn their name by jumping like fleas when disturbed. There are many pest species with varying markings and colorations. The blue-black flea beetle shown here is most common.

All flea beetles prefer hot, dry conditions. They cause damage by chewing tiny holes in the leaves of vegetables such as eggplant and cole crops. Seedlings are most succeptible to damage. The beetles can spread diseases such as early blight to potatoes or bacterial wilt to corn. Flea beetle larvae feed on roots of many plants. In the southwest, flea beetles are a major pest of dichondra lawns. Adults overwinter in the soil and on garden debris, emerging in early spring.

Prevention and Control

Eliminate overwintering sites by removing plant debris and similar hiding places in the fall. In dry climates, keep garden beds moist, making them less attractive to egg-laying adults. Cultivate soil frequently. Add parasitic nematodes to the soil to attack the larvae. Spray infested plants with insecticidal soap to reduce damage by the beetles.

Photography by National Gardening Association

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