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grape pest
grape pest  
QUESTION: This beetle or whatever it is is eating on my Concord Grape leaves.  There are two of them that I have found so far.  Could you identify it and tell me what I need to do to get rid of them?

ANSWER: Zoe,

This is the grape leaf beetle, see http://bugguide.net/node/view/37392 for another image. Like other leaf-feeding beetles they can be hand-picked if there are only a few. There are also insecticides such as neem oil or pyrethrum (see http://www.livingwithbugs.com/natural_pesticides.html).

Jack DeAngelis


---------- FOLLOW-UP ----------

QUESTION: Thanks so much for the identification!!  I had looked on the internet and didn't find anything, so I'm glad to know what it is.  Are these insects that over-winter or what?  I've never had them before in over 20 years of having my vines.  Is there something I've done that attracts them?

Thanks again!  This is a wonderful service and I really appreciate being able to contact someone who has expertise in the areas I need answers!!!!
Zoe

Answer
Here's a wikipedia page http://en.wikipedia.org/wiki/Grapevine_beetle that may be useful. They use a different common name (grapevine beetle). Adults apparently emerge in July with one generation per year, similar to Japanese beetle.

Jack DeAngelis

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Jack DeAngelis

Expertise

I can answer questions in any area of entomology (study of insects, spiders, mites, ticks, and other terrestrial arthropods). Contact me about home and garden insects such as aphids and spider mites, insects that bite and sting such as ticks and wasps, and insects that damage homes such as carpenter ants and termites.

Experience

20 years as university extension entomologist, now retired; currently publish a website about home and garden insects.

Organizations
see www.livingwithbugs.com/resume.html

Publications
see www.livingwithbugs.com/resume.html Fine Gardening magazine

Education/Credentials
Ph.D. in Entomology (the study of insects)

Awards and Honors
see www.livingwithbugs.com/resume.html

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