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Photo#129292
Some kind of hopper, Bay Area, CA - Fieberiella florii - female

Some kind of hopper, Bay Area, CA - Fieberiella florii - Female
Sunnyvale, Santa Clara County, California, USA
June 21, 2007

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Some kind of hopper, Bay Area, CA - Fieberiella florii - female Some kind of hopper, Bay Area, CA - Fieberiella florii - female Some kind of hopper, Bay Area, CA - Fieberiella florii - female

Privet Leafhopper
They're really common in my yard.
Here's one of mine:

 
If you see them all the time...
...I guess they must be OK. I also guess you have better vision than I do!

Sharpshooter
Cicadoidea » Leafhoppers (Cicadellidae) » Cicadellinae » Homalodisca

sp.?

If it is a glassy-winged sharpshooter the California Dept of Food and Agriculture should be called. These little guys are becoming a problem.

 
A problem? That's news to me.
The bay area used to be strongly agricultural, but now unless it can eat concrete I don't think it will do much damage around here. This particular insect was very small. My naked eyes could not even be sure if it was actually an insect!

 
Pierce’s disease
The real problem associated with glassy-winged sharpshooter is that it can spread the disease-causing bacterium Xylella fastidiosa from one plant to another. This bacterium is the causal agent of devastating plant diseases such as Pierce’s disease of grape, oleander leaf scorch, almond leaf scorch and mulberry leaf scorch. Other diseases to landscape plants in California include sweet gum dieback and cherry plum leaf scorch.

Suggest you google Pierce disease, the spread of the disease could do millions of dollars of danage to the wine industry, which lies just north of the Bay Area.

 
Your right the transmission of disease by leaf hoppers is
a potentially devastating problem. I did not mean to trivialize that, rather, I was lamenting the fact that this area, arguably some of the best farmland in the world, is being wasted on industries that would be more appropriately located on less productive land. And yet industry is what generates jobs and prosperity.