A moth carrying a sensor (IMAGE) University of Washington Caption University of Washington researchers have created a 98 milligram sensor system -- about one tenth the weight of a jellybean -- that can ride on the back of a moth. Shown here is a Manduca sexta moth with the sensor on its back. Credit Mark Stone/University of Washington Usage Restrictions For reuse with appropriate credit. 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.