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I have no idea what this is, perhaps an insect or a fungal infestation of a what I think is wild grape leaf. Any help with identification would be appreciated.
Border of woods in southeastern PA USA
Spotted on Sep 16, 2011
Submitted on Oct 4, 2011
Neat find! This would be a good addition to my new mission for Arthropod Galls!
Thank you for the suggestion KarenL.
And thank you dandoucette for the link. I haven't read the whole article on Phylloxera yet, but from what I did read in scanning the wiki article, it does sound like that's what it is. I had never heard of an insect gall before!
This is an insect gall, possibly caused by Grape Phylloxera.
Looks like some kind of gall - maybe grape tumid gallmaker?