next to Aphids
December 25, 2009
Hey, found these triangular green “leaf” bugs next to aphids. Are they good predators or bad adults? Thanks,
Southern California

Keeled Treehoppers

Keeled Treehoppers

Dear Kiloh,
These are adult Keeled Treehoppers, Antianthe expansa, a common garden pest in California and Arizona.  The adults and spiny nymphs, which we believe you may have mistaken for aphids, feed on tomato plants, pepper plants and other related solanaceous plants.  They feed by sucking the juices from the plants.  You can see some nice images on BugGuide.  While looking for potential links, we stumbled upon Vanessa cardui’s wonderful blog, Am I Bugging You Yet? that features bug sightings in and around Tustin, California.

Thanks! Other than a soap wash (or removing the plant) are there any other organic approaches to treating the problem?  PS you folks are great!!

Personally, we hand pick and squash them in our own garden, though they are a bit spiny.  Soapy water should work fine.

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