What Are Sawflies?

Sawflies are a wasp cousin that has larvae resembling caterpillars or slugs. There are several types of sawflies. As some larvae feed on plants, they create irregular holes that do not extend all the way through a leaf. This makes the holes appear transparent. Other types cluster along leaf edges, so that up to a dozen worm-like creatures are feeding on the same leaf.

Click here to learn about other pests that may create holes in leaves.