Drift-behavior
Guides
Habrophlebia vibrans
pronggilled mayfly
A small stream-dwelling mayfly with a 2-year life cycle, notable for its extended development compared to most mayflies. Adults emerge synchronously in June. Nymphs inhabit gravel substrates and show distinct drift patterns across life stages. The species has been studied in Québec populations, where it reaches final sizes of approximately 5 mm before emergence.