What's That Bug? does not endorse extermination

Subject:  Caterpillars
Geographic location of the bug:  Orange County, ca
August 28, 2017 12:32 PM
I’m wondering what type these are taking over my plants! There are probably 100 on one bush.
How you want your letter signed:  Anna

Genista Broom Caterpillars

Dear Anna,
You can compare your image to this BugGuide image to verify that you are being troubled by Genista Broom Caterpillars,
Uresiphita reversalis, a species sometimes called a Sophora Worm.  Genista Broom Caterpillars feed on leguminous plants.

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

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