Illustration of Tomato grub
Illustration by EH Zeck.
This is an illustration of Tomato grub Helicoverpa armigera (Hübner) (Lepidoptera:Noctuidae)
Order reference: tomato-caterpillar
When damaging tomatoes, this species is known as tomato grub but it is better known as the cotton bollworm or the corn earworm. It damages the crop, whether tomato, corn or cotton, by tunnelling through the developing fruit. Zeck has provided close-up images of the four stages of the life cycle, egg, caterpillar, pupa and adult moth as well as showing the insect on the plant where the eggs are laid on the stems of the flowers, the young caterpillar burrows into the young fruit and older caterpillars in ripening fruit while the pupal stage is in the soil.