Cotton Bollworm (Helicoverpa armigera) larvae attack all stages of plant growth. The caterpillar is pale green with small black dots, becoming darker and developing dark lines running along the body as it matures. In conventional cotton (non-Bt varieties), larval feeding can result in seedlings being tipped out, chewing damage to squares and small bolls causing them to shed, and chewed holes in maturing bolls, preventing
normal development and encouraging boll rot.