The Black Bean Aphid (Aphis fabae) (image) University of Kansas Share Print E-Mail Caption According to new research, for most aphid species winter temperatures are the main driver of synchrony determining when they first fly in spring or summer. Credit Rothamsted Research Usage Restrictions Please credit Rothamsted Research. 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.