The lecture examines the unique biologies and structure of insects, the most diverse group of organisms. The laboartory project is based on past public requests for an understanding of aquatic insect biodiversity in streams. Experience in sampling, sorting, and identifying aquatic insects is developed, and an understanding of biodiversity indices is developed for a formal report and presentation. Prereq: BIOL 411-412 or equivalent. Special fee. (Not offered every year).