Pest Status: Tomato hornworms can be very damaging to certain plants, especially tomatoes.
Appearance: Tomato hornworms are nearly identical to tobacco hornworms with the small exception of having five rather than six yellow spots on each side of the abdomen.
Life Cycle: The life cycle is also nearly identical. The unique caterpillars are large, green and have a distinct "horn" protruding from the rear.
Where to Collect: Hornworms are very fast fliers and may look like hummingbirds, hovering in front of flowers as they insert their long mouthparts.
Purdue Extension Entomology, 901 West State Street, West Lafayette, IN 47907 USA, (765) 494-4554