Mayfly

Mayfly adults are delicate looking insects with nearly transparent wings. Two or three tail filaments project from their abdomen. Mayflies are seen most often when they swarm for mating or come to lights at night. Adults generally do not eat, and live for only a few days.

The nymph of the mayfly is most often found in clear streams. Its shape is flattened to resist the force of fast currents. These nymphs generally feed on detritus, or decaying matter, and algae.