Mystrium camillae (image) University of Illinois at Urbana-Champaign Share Print E-Mail Caption The mandibles of the Dracula ant, Mystrium camillae, are the fastest known moving animal appendages, snapping shut at speeds of up to 90 meters per second. Credit Photo by Adrian Smith Usage Restrictions Photo may be used only with stories/videos about the research described in this release. Credit required: Photo by Adrian Smith 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.