[Image Number] 70 [Image (Click to Enlarge)] Mayfly nymph Order: Ephemeroptera I found this aquatic nymph on a rock at Frozen Head State Park in June 2008. Note the three tails and gills on the sides of the abdomen. [Image Viewed] 835 [Caption] 
Mayfly nymph Order: Ephemeroptera I found this aquatic nymph on a rock at Frozen Head State Park in June 2008. Note the three tails and gills on the sides of the abdomen.