Noticed this dead insect when cropped a photo for a wildflower observation.
From a September 28, 2015 water sample.
Pale underside of abdomen, a bit darker above. Clear wings. Appears to have 2 tails. I don't know if this is the same species as other small mayflies about on this day. There appeared to be differences in color among different specimens.
Small - size 20 or smaller. Body yellowish with brown markings. Clear wings. Couldn't tell how many tails.
I wonder if this is genus Leucrocuta. Yellowish body, dark rings and stripes on abdomen. Greenish, striped eyes. Clear wings, marked veins. Femur does not have marks in the middle, as do some other Heptageniidae. 2 tails.
White-transparent body with dark stripes banding abdomen. Wide-set greenish eyes, with stripe and dot in them. Markings on wing veins. Dark mark on middle of femur, common among Heptageniidaes.
Small. Yellow-brown body, brown eyes. Appears to have 2 tails. Clear wings.
Mayflies or shadflies are insects belonging to the order Ephemeroptera (from the Greek εφήμερος, ephemeros = "short-lived" (literally "lasting a day" "daily" or "day-long"), and πτερόν, pteron = "wing", referring to the brief lifespan of adults). They have been placed into an ancient group of insects termed the Palaeoptera, which also contains dragonflies and damselflies. They are aquatic insects whose immature stage (called "naiad" or, colloquially, "nymph") usually lasts one year in fresh water. The adults...