Kimmins, D.E., 1950
The main key covers adult Mayflies which are keyed to species. There is also a short key taking nymphs to genus only.
Available for download from the Royal Entomological Society website.
||The Royal Entomological Society of London (RES)
||I Part 9
|Comments and Corrigenda
||"Setae" in the keys refers to the tails.
||All the then known British species.
||Line drawings accompany text.
||Under a Stereo Microscope.
||Pinned or alcohol.
||Identification uses features which can be hard to see - tiny hindwings and weak venation so good lighting is important. Small species are difficult.