Insects and Spiders - native

Western Tent Caterpillar (Malacosoma californicum) on Aug 10, 2018

Originally reported as Insect or Spider (unknown species) (various)

Submitter has sample

Description of specimen

White web mass I n tree

Commentary

Dear Craig, this is likely the western tent caterpillar, a native moth. If you are interested in management, the caterpillar can defoliate your tree, cut the nest with the caterpillars off and dispose it off. Thank you for contacting our Invasive Hotline. Best regards, Helmuth Rogg, Oregon Department of Agriculture

Helmuth Rogg
Aug. 10, 2018, 1:18 p.m.

Resources

Western Tent Caterpillar USDA Fact Sheet

Location

I think we may have gypsy moth nest/ web in backyard

Expert Reviewer

Mr. Helmuth Rogg

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