Covered in attached ciliates.
Attracted to a mercury vapor lamp. Very small, probably 1 cm excluding tails.
ID from Bugguide photo 1163509
very small fly on the screen. Approx .5cm of the body and 1cm including antennae. Wet day with drissle ahead of storm coming. I thought there were a few that few up on my patio when I went outside, but after getting camera only found this one.
Baetidae is a family of mayflies with about 900 described species distributed worldwide. These are among the smallest of mayflies, adults rarely exceeding 10 mm in length excluding the two long slender tails and sometimes much smaller, and members of the family are often referred to as small mayflies or small minnow mayflies. Most species have long oval forewings with very few cross veins (see Comstock-Needham system) but the hindwings are usually very small or even...