This document discusses four common carrot insect pests: flea beetle, carrot weevil, carrot rust fly, and aphids. It provides details on the symptoms caused by each pest, including small holes in leaves from flea beetles, irregular grooves and yellowing leaves from carrot weevils, surface scarring and rust-colored tunnels from carrot rust flies, and yellowing or distorted leaves from aphids. For each pest, it also lists the type of insect (beetle, fly, or aphid) responsible and its appearance.