Hi Adam,

Thank you for reporting this and for killing the moths! Did you happen to keep a specimen? This report cannot be verified until the species is positively confirmed. You may have adult moths in the trap, but don't try opening them. Adults usually lay eggs in June and July, so please keep an eye out for egg masses attached to trees, firewood, fences, patio furniture, sides of RVs and your house, among other things. Eggs overwinter and larvae will hatch next spring. European gypsy moths have ~150 hosts and feed on 300+ trees and shrubs, including Aspen, Birch, Cedar, Cottonwood, Fruit trees, Larch, Oak, Poplar and Willow, and will completely defoliate trees and make them more susceptible to diseases and other pests. You might already have this information, but I've attached some useful weblinks below:

https://www.aphis.usda.gov/aphis/resources/pests-diseases/hungry-pests/the-threat/hp-egm/hp-egm

https://www.invasivespeciesinfo.gov/animals/eurogypsymoth.shtml

https://www.fs.fed.us/ne/morgantown/4557/gmoth/

http://forestinvasives.ca/Meet-the-Species/Insects/European-Gypsy-Moth#76743-host-trees

https://www.oregon.gov/ODA/shared/Documents/Publications/IPPM/GypsyMothFactSheet.pdf

I alerted APHIS (Animal and Plant Health Inspection Service) who looped in ODA (Oregon Department of Agriculture) and ODF (Oregon Department of Forestry). I imagine ODA will stop by and pick up their traps at some point. If you have a specimen of the moth or eggs, please let me know. Thanks again and have a great week!

Kind regards,

Tyler Pedersen
Tualatin SWCD
503-334-2288 Ext 111

Tyler Pedersen
June 18, 2018, 4:16 a.m.

I have spoken with landowner and got a description of the moth, it is a type of underwing. Not a gypsy moth.

Christine Buhl
June 25, 2018, 12:57 a.m.