Cool find! This is indeed an Oak gall. This particular gall is created by a type of wasp. Did you happen to open it up to see what it looked like inside? There are a couple of options for this. Here is the Bug Guide page for Genus Amphibolips, which is most likely the type of wasp that made this gall: http://bugguide.net/node/view/39773/bgpa... It's very likely Amphibolips quercusinanis, Larger Empty Oak Apple Wasp.
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Cool find! This is indeed an Oak gall. This particular gall is created by a type of wasp. Did you happen to open it up to see what it looked like inside? There are a couple of options for this. Here is the Bug Guide page for Genus Amphibolips, which is most likely the type of wasp that made this gall: http://bugguide.net/node/view/39773/bgpa...
It's very likely Amphibolips quercusinanis, Larger Empty Oak Apple Wasp.
http://bugguide.net/node/view/240411
This spotting belongs in the Arthropods section. You could also add this to a couple of missions!
Arthropod Galls of the North East: http://www.projectnoah.org/missions/1473...
Animal Architecture mission: http://www.projectnoah.org/missions/8082...
New England Arthropods: http://www.projectnoah.org/missions/1408...
:-) I hope this helps!