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Photo#310731
Bagrada hilaris mating  - Bagrada hilaris - male - female

Bagrada hilaris mating - Bagrada hilaris - Male Female
neighborhood of Mount Washington near downtown Los Angeles, Los Angeles County, California, USA
July 26, 2009
These tiny Stink Bugs, Bagrada hilaris, were found mating on Collard Greens and Kale in the front yard garden. They move very quickly and can fly while "in flagrante delicto." The size difference compared to the Harlequin Bug is significant. I could not get a photo of the two species together without first placing them in the freezer for about 10 minutes. The Natural History of Orange County website has a page (http://nathistoc.bio.uci.edu/hemipt/Bagrada.htm) devoted to the life cycle of what the County of Los Angeles Agricultural Commissioner is calling the Painted Bug.

Images of this individual: tag all
Bagrada hilaris mating  - Bagrada hilaris - male - female Bagrada hilaris (left) size comparison to Murgantia histrionica - Bagrada hilaris

Moved
Moved from ID Request.
Thanks for the photos, now we have another neighborhood.

 
Bagrada hilaris mating - West Los Angeles
I have a snap load of these bugs mating in the broccoli and cauliflower section of my garden. I pulled up some roots and there are thousands...
I don't use pesticides, and wonder if they will move to tomatoes and zuchinni.
Does anyone know the varieties they prefer? How do I rid them?

 
Sounds like they're getting around,
and well on the way to establishing themselves as pests. Seems to have been the pattern reported in Africa, and Asia. Your cauliflower and broccoli (& other cabbages, kale, kohlrabi, etc.) are members of the mustard family, the preferred plants for this bug.
Reportedly, a mixture of chili, soap, garlic, and paraffin was successful in trials in Africa. See this site: Bagrada bug.
I've e-mailed a copy of the L.A. Ag information sheet. UC Riverside also has a new information page on this: B. hilaris.
Definitely something you should try to eradicate from your garden.
See also this post describing one method of removal, albeit from the plants.
A non-toxic home method I've used in similar situations: pour very hot water over the soil after removing the plants, and dunk the infested plant parts in hot water.

They can also walk very fast while doing it.
Female powers the action. When viewed from above, it looks like a wheelbarrow race.

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