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Home » Guide » Arthropods (Arthropoda) » Unidentified Tracks, Sign, and Other Mysteries » Unidentified Signs on Twigs, Stems, and Stemlike Structures
Photo#1331296
Weeping oak wound #2
Copyright © 2017 John van der Linden

Weeping oak wound #2
Mondamin Unit, Loess Hills State Forest , Harrison County, Iowa, USA
September 28, 2014
I noticed the twig wound because of the activity of the butterflies (hackberry emperors, I believe) that were drawn to it. Here you can see them feeding on the exudate from the wound.

A month later, also in IA, also on Quercus:

Images of this individual: tag all
Weeping oak wound #2 Weeping oak wound #2
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Contributed by John van der Linden on 13 January, 2017 - 4:08pm

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