Galls on Ulmus tree leaves?

Discussion in 'Plants: Conservation' started by ariani, May 18, 2016.

  1. ariani

    ariani Active Member 10 Years

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    These galls on Ulmus sp. tree leaves are caused by an insect but I do not know the name. Can you help me please and is it infestation to other trees around?
     

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  2. Daniel Mosquin

    Daniel Mosquin Paragon of Plants UBC Botanical Garden Forums Administrator Forums Moderator 10 Years

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  3. Arlette

    Arlette Active Member

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    I also believe that it's a Tetraneura ulmi whose gallels, along with those of Eriosoma lanuginosum, are currently being studied as the liquid contained in them could be "the forgotten ingredient" of classical paints. The research is aimed at having an interesting new substance that can be used in the preparation of violin paints.
     

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