EPHEMEROPTERA MAYFLY ⸻ the most popular and celebrated group of insects in the history of fly fishing.	TRICHOPTERA SEDGE ⸻ sedges are an important part of trout's diets. Their hatches can drive fish to frenetic rise.	PLECOPTERA STONEFLY ⸻ trout feed on the stonefly nymphs as well as the winged insects during the egg-laying phase.	E.O.L. Ephemera On Line ⸻   A sustainable monitoring of headwaters benthos as indicator of water quality.