Insects and Spiders - native

Tent Caterpillars (Malacosoma species) on Aug 29, 2009

Originally reported as European Spongy Moth (Lymantria dispar)

Submitter does not have a specimen

Description of specimen

I see a large tent-like cocoon in the upper branches of a tree on my block. Being from New England I quickly associated it with the Gypsy Moth infestations I have seen there. As yet I have not managed to catch a live specimen for identification. But I believe I have seen another nest just north of Mississippi and Fremont.


What is the best way to go about properly identifying the species as a gypsy moth? Is there anything that can be done to control the spread of these moths?

Aug. 29, 2009, 8:32 a.m.

Daniel, thank you for sending me an actual picture of these cocoons - it allowed for confirmation that these are indeed tent caterpillars. For more information about what the Oregon Department of Agriculture is doing regarding gypsy moths, please see this website: Thank you so much for your report - we rely on the eyes of people like you to see potential new invasives.

Lisa DeBruyckere
Aug. 30, 2009, 8:09 p.m.