Caterpillar ID

This is a caterpillar that I can’t find in my reference books. It must be some type of geometer.

If you can identify this caterpillar or have suggestions please leave a comment below. Thanks!

Can you identify this caterpillar?


  1. Ginny Remeika says

    This seems to be an elm sawfly larva (not a true caterpillar, which becomes a butterfly or moth). Here
    is a description, and if you go to and search for “elm sawfly larva” there is a picture of the yellow form near the middle.

    • Frederick Gralenski says

      Thanks for the ID, and that seems to be the critter. Sawflies are sort of sneaky.