Cotton bollworm
long. The first instars are the most mobile, and move like loopers. The caterpillars are often aggressive and cannibalistic. Pupation occurs in the soil [...] General The cotton bollworm ( Helicoverpa armigera ) occurs in the tropics and sub-tropics of all continents except for North America. Larvae of the cotton [...] When they reach the second instar, they can penetrate fruit through a small hole, often bored near the stalk. During development, the caterpillars damage