#1
Can anyone confirm my ID of this mayfly (emerged very early in April..) as the Brown Mayfly Ephemera vulgata? The abdomen seems darker than the Green drake mayflies I usually see (Epehemera danica) but this was at a different site where the river flows more slowly.
25.4.11 c15mm resting on Nettle by riverbank (many were dancing), near Bath, UK.