Gall?

Asked January 7, 2018, 6:02 PM EST

I was camping up near Halfway Ranger Station outside of Ely and noticed these odd little guys on a plant leaf and was wondering if you could help me id them.

St. Louis County Minnesota leaf galls spiny leaf gall

1 Response

Probably a spiny leaf gall, caused by a gall wasp (Diplolepis polita) or a closely related species.
https://bugguide.net/node/view/192706/bgimage