This list of the mayflies recorded in the British Isles follows Macadam, with nomenclature and taxonomy according to Kluge. There are 51 species of mayfly known to occur in the British Isles, distributed among ten families. Ameletidae Ameletus inopinatus Eaton, 1887 Arthropleidae Arthroplea congener Bengtsson, 1908 Baetidae Alainites muticus (Linnaeus, 1758) Baetis buceratus Eaton, 1870 Baetis fuscatus (Linnaeus, 1761) Baetis rhodani (Pictet, 1843) Baetis scambus Eaton, 1870 Baetis vernus Curtis, 1834 Centroptilum luteolum (Muller, 1776) Cloeon dipterum (Linnaeus, 1761) Cloeon simile Eaton, 1870 Labiobaetis atrebatinus (Eaton, 1870) Nigrobaetis digitatus (Bengtsson, 1919) Nigrobaetis niger (Linnaeus, 1761) Procloeon bifidum (Bengtsson, 1912) Procloeon pennulatum (Eaton, 1870) Caenidae Brachycercus harrisellus Curtis, 1834 Caenis beskidensis Sowa, 1973 Caenis horaria (Linnaeus, 1758) Caenis luctuosa (Burmeister, 1839) Caenis macrura Stephens, 1835 Caenis pseudorivulorum Keffermüller, 1960 Caenis pusilla Navás, 1913 Caenis rivulorum Eaton, 1884 Caenis robusta Eaton, 1884 Ephemeridae Ephemera danica Müller, 1764 Ephemera lineata Eaton, 1870 Ephemera vulgata Linnaeus, 1758 Ephemerellidae Ephemerella ignita (Poda, 1761) Ephemerella notata Eaton, 1887 Heptageniidae Ecdyonurus dispar (Curtis, 1834) Ecdyonurus insignis (Eaton, 1870) Ecdyonurus torrentis Kimmins, 1942 Ecdyonurus venosus (Fabricius, 1775) Electrogena affinis (Eaton, 1870) Electrogena lateralis (Curtis, 1834) Heptagenia longicauda (Stephens, 1835) Heptagenia sulphurea (Müller, 1764) Kageronia fuscogrisea (Retzius, 1783) Rhithrogena germanica Eaton, 1870 Rhithrogena semicolorata (Curtis, 1834) Leptophlebiidae Habrophlebia fusca (Curtis, 1834) Leptophlebia marginata (Linnaeus, 1767) Leptophlebia vespertina (Linnaeus, 1758) Paraleptophlebia cincta (Retzius, 1783) Paraleptophlebia submarginata (Stephens, 1835) Paraleptophlebia werneri Ulmer, 1920 Potamanthidae Potamanthus luteus (Linnaeus, 1767) Siphlonuridae Siphlonurus alternatus (Say, 1824) Siphlonurus armatus Eaton, 1870 Siphlonurus lacustris Eaton, 1870 References Lists of insects in the British Isles