Developed by Associate Professor Andrei Alyokhin, Extension Professor James Dwyer, and Assistant Extension Professor Andrew Plant. For information about UMaine Extension programs and resources, visit extension.umaine.edu. Find more of our publications and books at extension.umaine.edu/publications/. Table of Contents: Colorado Potato Beetle The Phenomenon of Insecticide Resistance Preventing Insecticide Resistance Table 1. Insecticides Registered for Colorado