![]() Insecticides are generally ineffective against mature larvae.Įastern tent caterpillar nests are frequently confused with fall webworm nests. But keep in mind that no additional feeding or damage is done by the wandering caterpillars. They are a nuisance and can create a mess when they are squashed on driveways, sidewalks, and patios. Frequently they are seen crawling on other types of plants, walkways, and storage buildings. Larvae cause considerable concern when they begin to wander to protected places to pupate. The silken nests are built in the crotches of limbs and can become quite large. In the landscape, however, nests can become an eyesore, particularly when exposed by excessive defoliation. While tent caterpillars can nearly defoliate a tree when numerous, the tree will usually recover and put out a new crop of leaves. Eastern tent caterpillar nests are commonly found on wild cherry, apple, and crabapple, but may be found on hawthorn, maple, cherry, peach, pear and plum as well. Defoliation of trees, building of unsightly silken nests in trees, and wandering caterpillars crawling over plants, walkways, and roads cause this insect to be a pest in the late spring and early summer. The eastern tent caterpillar, Malacosoma americanum, is a pest native to North America. Populations fluctuate from year to year, with outbreaks occurring every several years. University of Kentucky College of Agriculture ENTFACT-423: Eastern Tent Caterpillar | Download PDF by Ric Bessin, Extension Specialist
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