This photo was taken along a Vermont dirt road in mid-July. Who is this yellow fellow?
Answer
Elm sawfly larva.
You won’t find this yellow fellow in your butterfly and moth guide because it’s not a caterpillar: it’s the larva of an elm sawfly (Cimbex americana). Elm sawflies are a type of wasp. As larvae, they can grow up to two inches long, and feed on the foliage of elms, willows, and other trees.
This week’s contest winner was Cally McCrave of Lyme, NH