description Fall Webworm Overview
The fall webworm, Hyphantria cunea, is a moth in the family Erebidae whose caterpillars feed on many deciduous trees and shrubs. The larvae live communally inside silken webs built around branch ends, expanding them as they consume foliage. Native to North America, it is most noticeable from late summer through early fall. Feeding can defoliate parts of a tree, but damage to healthy mature trees is usually mainly aesthetic.
([Virginia Tech](https://www.pubs.ext.vt.edu/2808/2808-1013/2808-1013.html); [Butterflies and Moths of North America](https://www.butterfliesandmoths.org/species/Hyphantria-cunea))
help Fall Webworm FAQ
What is the fall webworm's scientific name?
The fall webworm is Hyphantria cunea. It is a moth in the family Erebidae, and its caterpillars are known for building communal silk webs.
What do fall webworm caterpillars eat?
The caterpillars feed on many deciduous trees and shrubs. They usually consume foliage inside silken webs built around the ends of branches.
Why do fall webworm nests grow larger over time?
The larvae live communally and expand their web as they consume more leaves. The web can therefore spread over additional branch foliage during the feeding period.
Where is the fall webworm native?
The fall webworm is native to North America, although its broader distribution may include introduced or established populations elsewhere. The supplied description identifies North America as its native region.
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