Ameletus ludens 
Atopopus edmundsi 
Baetis intercalaris 
Callibaetis californicus 
Callibaetis ferrugineus 
Cloeon dipterum 
Cloeon simile 
Ephemera lineata 
Ephemera vulgata 
Ephoron virgo 
European Green Drake 
Four-lined Giant Mayfly 
Heptagenia marginalis 
Isonychia rufa 
Leucrocuta hebe 
Maccaffertium modestum 
Maccaffertium pulchellum 
Maccaffertium terminatum 
Mahogany Dun 
Stenacron interpunctatum 
Stenonema femoratum 
Sulphur Dun 
Walker's Tusked Sprawler