big early-season mayfly - Leptophlebia -  Cardinal Marsh, Winneshiek County, Iowa, USA April 17, 2021 Size: ~15 mm
I was only able to get one photo of this mayfly so it might be impossible to determine its identity. This subimago was out quite early in the season. I noticed that it has 3 tails, a characteristic that I saw in some examples of spiny crawler mayflies.
Contributed by Larry Reis on 9 January, 2022 - 8:09am Last updated 9 January, 2022 - 12:14pm |