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Family	Genus	Species
Acanthametropodidae	1	1
Ameletidae	2	140
Ameletopsidae	4	9
Ametropodidae	1	3
Arthropleidae	1	2
Baetidae	68	1018
Baetiscidae	1	7
Behningiidae	3	4
Caenidae	11	227
Coloburiscidae	3	8
Dipteromimidae	1	7
Ephemerellidae	26	327
Ephemeridae	5	56
Euthyplociidae	4	21
Heptageniidae	33	670
Ichthybotidae	1	1
Isonychiidae	1	32
Leptohyphidae	11	94
Leptophlebiidae	63	1149
Metretopodidae	1	3
Metropodidae	1	3
Neoephemeridae	2	8
Nesameletidae	3	11
Oligoneuriidae	10	47
Oniscigastridae	3	8
Palingeniidae	4	5
Polymitarcyidae	5	21
Potamanthidae	4	25
Prosopistomatidae	1	12
Pseudironidae	1	1
Rallidentidae	1	1
Siphlaenigmatidae	1	1
Siphlonuridae	4	63
Teloganodidae	9	44
Tricorythidae	4	12