Bollworm Moth (image) University of Arizona Share Print E-Mail Caption Bollworm, Helicoverpa zea, moths have a wingspan of 1. 5 to 2 inches. Their caterpillars, known as bollworms, are serious pests of cotton in the southeastern US and Texas. Credit USDA-Agricultural Research Service. Usage Restrictions None Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.