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Home » Guide » Arthropods (Arthropoda) » Unidentified Tracks, Sign, and Other Mysteries » Unidentified Galls » Salix (willow) stem galls
Photo#767777
Willow stem gall
Copyright © 2013 Tom Klein

Willow stem gall
Pheasant Branch Conservancy, Middleton, Dane County, Wisconsin, USA
May 7, 2013
The black vertical line northwest of the center of the left piece looks like a line of pellets of frass to me, but I don't see anything I would call a cocoon.

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Willow stem gall Willow stem gall
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Contributed by Tom Klein on 7 May, 2013 - 4:26pm

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