Abstract
The 15th International Symposium on Trichoptera found the world caddisfly community once again in the United States of America, 4-8 June 2015. This second US-based symposium was hosted at Rutgers University, New Brunswick in the Garden State of New Jersey. The 8th International Symposium, the last meeting in the United States, occurred 20 years before at the University of Minnesota in Minneapolis and at Lake Itasca, headwaters of the Mississippi River.