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acorn cap gall - Andricus balanella

acorn cap gall - Andricus balanella
Prescott, Yavapai County, Arizona, USA
August 5, 2015
Like this here: .

On oak. Note drops of honeydew; suggests that galls need protection from predators/parasites. Many arthropods feeding but I didn't have the time or equipment to document.

Acorn looks abnormal too.

Moved from Gall Wasps.

Moved from ID Request.

Even naming two or three possible species would help tremendously in determining what the gall is.

Yeah, sorry, Emory-like.
Yeah, sorry, Emory-like.

Host info
What species of oak?

I'll have to check on that.
I'll have to check on that. It's not always well defined.

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