Humped Green Fruitworm

Subject: green caterpillar feeding on Azalea
Location: Minneapolis, MN
May 28, 2016 8:48 am
This morning while picking off azalea sawflies, I found this caterpillar on my “Northern Lights”
azalea . In 15 years of springtime sawfly activity I have never seen a caterpillar like this; on or off an azalea! If you could ID this I would be very grateful.
Signature: Joanne K., Minneapolis

Humped Green Fruitworm
Humped Green Fruitworm

Dear Joanne,
Your distinctive caterpillar belongs to the Copper Underwing,
Amphipyra pyramidoides, and it is sometimes called a Humped Green Fruitworm, according to BugGuide.  According to BugGuide:  “Larvae are general feeders on leaves of many broadleaf trees and shrubs, including apple, basswood, hawthorn, maple, oak, walnut, raspberry, viburnum, grape, greenbrier (Smilax)” and thanks to your submission, our readers will know to also search for them feeding on Azalea.

Gosh, that was quick!
Thanks so much, he is quite beautiful.
Thanks again.
Joanne K

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