A crepuscular species difficult to locate as an adult and with scattered distribution on river sites and a few lake sites across the state. New populations were located by finding exuviae on the Lamoille River, Otter Creek and Poultney River within recent years. Bridge abutments and hydroelectric power stations tend to be good search locations for exuviae. Hunt et al. found numerous locations along the Connecticut River, especially in the southern section. Likely to turn up in other locations with appropriate search efforts. Likewise, two of its northeastern congeners,Broad-tailed Shadowdragon (N. michaeli) and Umber Shadowdragon (N. obsoleta), may yet be discovered in Vermont. Confirmation by exuviae requires careful inspection.
State: S3, Species of Greatest Conservation Need
May 30 – September 10