We have a number of these caterpillars in the yard. They are about 3 cm long. This is on the peninsula south of San Francisco, CA, USA. I initially thought of geometer moths but it seems to have the full complement of prolegs.

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  • It looks like a Cabbage looper, however I counts 4 (or even 5) pairs of false legs on your specimen, while it should be 3. – benn Apr 19 '18 at 18:59
  • What is the plant it was found on? If it wasn't found on a plant,what plant was it near? – peter Apr 24 '18 at 17:47
  • They haven't been on plants. We have oak trees and California buckeyes in the yard plus rhododendrons, camellias, and other flowers. We haven't seen much damage. – Ross Millikan Apr 24 '18 at 19:24
  • @NiallC. If this insect doesn't affect the garden, why is this question not yet closed? – Aleksandar M Aug 9 '18 at 4:40
  • @AleksandarM If you think a question is off-topic, you can vote to close it as such. – Niall C. Aug 9 '18 at 14:00

luna moth caterpillar

This sure looks like your little guy!

  • That seems to be found from the great plains eastward, not in California – Ross Millikan Apr 19 '18 at 23:01

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