Mayfly Nymph

About 700 species in North America

Develop in the stream during period of two weeks to two years

Live on exposed rock surfaces in fast current or buried in soft stream beds

Large numbers of flying adults may emerge from stream at the same time

Platelike or feathery gills along the side of the abdomen

Two or three long hairlike tails

Six segmented legs on middle section of body

Project Watershed Central New York