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Some kind of disease or pest affecting maple leaves.

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Rioux and Son
Rioux and Son 7 years ago

Thanks man! Yeah, figured it was insect-related. See them all the time.

dferris 7 years ago

I did a quick google search, and i found that its a gall caused by a mite.

dferris 7 years ago

I see those all the time on a variety of leafs. I've always wondered what it was; I just assumed it was some kind of fungus.

Rioux and Son
Spotted by
Rioux and Son

British Columbia, Canada

Spotted on Jun 29, 2014
Submitted on Jul 14, 2014

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