cowpea seed beetle (IMAGE) Uppsala University Caption One species studied in detail by the researchers is an insect pest known as the cowpea seed beetle (Callosobruchus maculatus). The female pictured is laying eggs on a bean that the larvae then feed on. Credit Mareike Koppik Usage Restrictions May only be used when reporting about this study. License Licensed content 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.