Callosobruchus maculatus, the Bean Beetle (image) Rice University Share Print E-Mail Caption Callosobruchus maculatus, a.k.a. the bean beetle, was the subject of a Rice University study to see if rapid evolution of a species can cause biological invasions to spread faster and with more variability. Credit Jeff Fitlow/Rice University Usage Restrictions For news reporting purposes only. 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.