Spiny Rose Leaf Gall

Alberta

Bug Bits
Common Name: Spiny Rose Leaf Gall
Scientific Name: Diplolepis polita
Native to: Possibly throughout Canada and the United States
Date Seen: May 2012
Location: South of Cluny, Alberta
Notes: These galls were found on Wild Roses. A gall wasp induces a chemical reaction in rose stems or leaves. This creates a case, or gall, that protects the wasp’s larvae.

2 comments

    • Don’t they remind you of the centres of some flowers! They apparently don’t hurt the bushes, unless there are too many of them.

      Like

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