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Hyphantria cunea

Hyphantria cunea
Sevenmile Creek, 8 kilometers northwest of Helena, Lewis and Clark County, Montana, USA
August 18, 2020
Ca 30 larvae in web nest about 2 m high in a Prunus virginiana surrounded by grasses above a stream terrace. One of several nests noted in chokecherries along about 2 km of stream this fall. Frass present and chokecherry leaves brown and dry within nest. Elevation ca 4000 feet. Disturbed, shrubby riparian corridor on stream restoration site within a patchwork of native and non-native grassland. My apologies for the poor image quality.

Images of this individual: tag all
Hyphantria cunea Hyphantria cunea Hyphantria cunea

Yes, Hyphantria cunea
Moved from ID Request.

Time of year and position of web on the tree (enclosing leaves at the end of a branch as opposed to a web at the crotch of a branch) rules out the tent caterpillars. Appearance of the caterpillars also matches Hyphantria cunea.

Thank you!
Thank you! Glad for the confirmation.

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