Honeybee larvae development (IMAGE) University of Würzburg Caption Development of honeybees in the laboratory. The larvae received pesticides in their food from the fourth to the ninth day. After the ninth day, the larvae in the bee colony would normally be capped for their pupation; in the laboratory, they were transferred to a new plate. The different stages of development from egg (day 1-3) to round larva (day 4-9), stretched larva (day 10-12) and pupa (day 13-20) to the hatched adult bee (day 21) are clearly visible. Credit Sarah Manzer / University of Wuerzburg Usage Restrictions none License Original 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.