Fall Webworm in Arizona
Fall webworms are caterpillars that commonly defoliate many species of broadleaf deciduous trees. They also attack fruit, nut and ornamental shade trees and shrubs, including pecan and mulberry. Fall webworms are native to North America and are present throughout the country. Activity in the state has appeared to increase in recent years, both in geography and host species.This insect’s most obvious sign is the caterpillars’ communal silken web that can be seen at the ends of the branches during late summer and fall. Damage does not usually cause serious stress to trees. Treatment is not typically prescribed, especially in natural settings.
AZ1627-2014
Keywords:
- fall webworm
- hyphantria cunea
- defoliator
- forest
- tree
- integrated pest management
Publication Date:
September 2014
AZ1627-2014
Pages:
5 pp.