Checklist of Order Ephemeroptera Hyatt & Arms, 1891 (Mayflies) for Nearctic (Ecozones)
List of families for Nearctic 16 Families width 832 Species and 2 Subspecies | Ametropodidae Bengtsson, 1913 | Sand minnow mayflies | 4 | Species | Taxom | | Arthropleidae Balthasar, 1937 | Flatheaded Mayflies | 1 | Species | Taxom | | Baetidae Leach, 1815 | Mayflies | 204 | Species | Taxom | | Baetiscidae Banks, 1900 | Armored Mayflies | 12 | Species | Taxom | | Behningiidae Motas & Bacesco, 1937 | Tuskless burrowing mayflies | 1 | Species | Taxom | | Caenidae Newman, 1853 | Small square-gill mayflies | 48 | Species | Taxom | | Ephemerellidae (Klapálek, 1909) | Blue-Winged Olive Ephemerellidae | 111 | Species | Taxom | | Ephemeridae Leach, 1817 | Burrowing mayflies | 18 | Species | Taxom | | Heptageniidae Needham, 1901 | Flat-Bodied Up-Wings Heptageniidae | 171 | Species | Taxom | | Leptohyphidae Landa & Soldán, 1985 | Little Stout Crawler Mayflies | 49 | Species | Taxom | | Leptophlebiidae Banks, 1900 | Leptophlebiids | 81 | Species | Taxom | | Neoephemeridae Traver, 1935 | Large square-gilled mayflies | 5 | Species | Taxom | | Oligoneuriidae Ulmer, 1914 | Brushleg Mayflies | 30 | Species | Taxom | | Polymitarcyidae Banks, 1900 | Pale Burrower Mayflies | 12 | Species | Taxom | | Potamanthidae Albarda, 1888 | Hacklegill mayflies | 4 | Species | Taxom | | Siphlonuridae Banks, 1900 | Primitive Minnow Mayflies | 81 | Species | Taxom |
Subnodes of Ephemeroptera with occurrences in Nearctic
 | | Ephemeroptera (Hyatt & Arms 1891) |
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