Venus Flytrap (IMAGE) University of Würzburg Caption The Venus flytrap recognizes the size of its prey. Insects that are too small (left) are not able to apply the necessary force to stimulate the plant's tactile hairs (right) and thus trigger the trapping mechanism. Credit Photos: Sönke Scherzer / University of Würzburg Usage Restrictions None 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.