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FPL 11 - Fall Webworm

The information accessed from this screen is based on the publication: Humphreys, N. 1983. Fall Webworm. Forestry Canada, Forest Insect and Disease Survey, Forest Pest Leaflet No. 11 4p.

Introduction

The fall webworm, Hyphantria cunea Drury (Lepidoptera: Arctiidae), is native to North America and is a major pest of trees in Europe and Asia. The webworm feeds on a wide variety of deciduous trees and shrubs, often resulting in complete defoliation. The extensive tents or webs, for which the insect is named, may be numerous on one or more trees at a locality. Control is seldom necessary because the damage is generally of aesthetic rather than economic importance.

For more information, see the Fall Webworm Forest Pest Leaflet in the Canadian Forest Service bookstore.