Psilotreta indecisa is a Wisconsin Special Concern caddisfly found in aquatic habitats. Caddisflies are in the order Trichoptera and are the architects of the aquatic insect world. Larvae construct intricate nets or complex cases out of sticks, leaves, sand, and gravel that are held together by 'silk' and are unique to the species. In most cases, the larvae live approximately one year, then pupate and emerge as moth-like adults and live for only one to two weeks, although some species can last up to two months. They are good indicators of water quality and an important food source for fish.
