Order Ephemeroptera
• Small to medium-size insect with elongate, very soft body
• Forewing large, triangular, many veined
• Hind wing small and rounded
• At rest wings held together above body
• Abdomen with 2 or 3 hairlike tails
• Antennae small, bristlelike and inconspicuous
• Lives in water
• Does not fly well
• Nymphs are aquatic
• 600 species in North America
• Adults and nymphs important food for many freshwater fish
• Adults live only one or two days
