What's That Bug? does not endorse extermination

Subject: Cannibis Eater?
Location: Central Calif, USA (city of Bakersfield)
July 29, 2014 7:59 pm
We have found these 4 winged “flies” on our cannabis plant. Are they insect or plant eaters?
So far they haven’t eaten me!
Signature: Lynn

Sharpshooter

Glassy Winged Sharpshooter

Hi Lynn,
Your images are very tiny and not of the highest quality, so we enlarged them and enhanced them for posting, but we prefer high resolution, high quality images for identification purposes.  This appears to be some species of Leafhopper or Sharpshooter, and there are many agricultural pests in the family.  Leafhoppers suck the juices from plants, and some species are known to spread viral infections to plants.  Our best guess is that this is a Glassy Winged Sharpshooter,
Homalodisca vitripennis, based on this BugGuide image.  According to BugGuide, it is:  “A major vector of Pierce’s disease on grape. Usually not a serious pest within its native range, this sp. was introduced into so. California, where it has become a serious threat to viticulture.”  We attempted to locate any documentation on the relationship between Glassy Winged Sharpshooters and Marijuana, and we did find a different species of Sharpshooter feeding on Marijuana on the FloraFinder site.  The University of California Davis Integrated Pest Management site has an excellent article on the Glassy Winged Sharpshooter, and though we scanned it, we could not find a reference to marijuana. 

Glassy Winged Sharpshooter

Glassy Winged Sharpshooter

What's That Bug? does not endorse extermination
Location: Bakersfield, California
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