Blacklegged Tick (IMAGE) Entomological Society of America Caption This is a blacklegged tick (Ixodes scapularis), one of the main vectors of Lyme disease. Credit Gary Alpert, Harvard University, Bugwood.org. Usage Restrictions Must credit Gary Alpert, Harvard University, Bugwood.org. 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.