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Family	Genus	Species
Acanthametropodidae	2	3
Ameletidae	2	154
Ameletopsidae	4	11
Ametropodidae	1	3
Arthropleidae	1	4
Baetidae	73	1172
Baetiscidae	1	15
Behningiidae	3	5
Caenidae	13	256
Coloburiscidae	3	8
Dipteromimidae	1	7
Ephemerellidae	27	357
Ephemeridae	5	60
Euthyplociidae	4	21
Heptageniidae	34	756
Ichthybotidae	1	2
Isonychiidae	1	42
Leptohyphidae	15	128
Leptophlebiidae	64	1232
Metretopodidae	2	4
Metropodidae	1	8
Neoephemeridae	3	13
Nesameletidae	3	12
Oligoneuriidae	10	54
Oniscigastridae	3	11
Palingeniidae	4	6
Polymitarcyidae	5	26
Potamanthidae	5	30
Prosopistomatidae	1	12
Pseudironidae	1	1
Rallidentidae	1	1
Siphlaenigmatidae	1	1
Siphlonuridae	5	80
Teloganodidae	9	44
Tricorythidae	4	12