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Beetle Bugaboo

Photos & text by Albert Brian Vick,  Lewis Ginter Botanical Garden, Community Kitchen Garden Coordinator 

Scary scarab, or just another neighbor in the Community Kitchen Garden? One of our brave volunteers hosted this brief visit by a Grapevine Beetle (Pelidnota punctata), generating quite a bit of excitement from surrounding volunteers. Our approach to insects is: “Friend or foe? Magnitude of the threat? Any possible mitigants?”
The Grapevine Beetle adults will eat foliage, and the larvae will eat roots, but the threat is considered minor and no controls are generally necessary. We’ll be watching for any effects from the grubs.

Scary scarab… but didn’t bite.

 

Grapevine Crawler
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3 Responses to “Beetle Bugaboo”

  1. Chandara Om says:

    Dear Sir or Madam,

    I have a problem with grapevine beetle and grub.
    How can I control it and kill it? I don’t want to use chemical.
    Please advice me for this problem.

    I am waiting for your helping.

    Thanks,
    Best regards,
    Chandara

  2. Hi Chandara, Let me ask our horticulture staff and see if we can give you some advice. Jonah

  3. Chandara, Janet Woody, at our Hort Help Line researched your request. Here is her answer: here is a link to the Iowa State University Extension and Outreach website with a short article on the grapevine beetle. This site, as well as the others I’ve checked, indicate that this beetle does not do significant damage and that chemical controls are not needed. According to Iowa State, “Adult beetles found on grapevines need only be handpicked and discarded.” I expect that any visible grubs can be discarded also.

    ~Jonah

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