| Family | Common Name | Selected Genus and Species | Image |
| Acanthametropodidae | Sand-dwelling mayflies | Analetris eximia |  |
| Ameletidae | Minnow mayflies | Ameletus browni |  |
| Ameletopsidae | Mayflies | Ameletopsis perscitus |  |
| Ametropodidae | Sand minnow mayflies | Ametropus ammophilus |  |
| Austremerellidae | Mayflies | Austremerella picta |  |
| Baetidae | Small minnow mayflies | Cloeon dipterum |  |
| Baetiscidae | Armoured mayflies | Baetisca berneri |  |
| Behningiidae | Sand-burrowing mayflies | Dolania americana |  |
| Caenidae | Small square-gill mayflies | Caenis horaria |  |
| Chromarcyidae | Mayflies | Chromarcys magnifica |  |
| Coloburiscidae | Mayflies | Coloburiscus humeralis |  |
| Coryphoridae | Mayflies | Coryphorus molinerii |  |
| Dicercomyzidae | Mayflies | Dicercomyzon costale |  |
| Dipteromimidae | Mayflies | Dipteromimus tipuliformis |  |
| Ephemerellidae | Spiny crawler mayflies | Eurylophella aestiva |  |
| Ephemeridae | Burrowing mayflies | Ephemera danica |  |
| Ephemerythidae | Mayflies | Ephemerythus straeleni |  |
| Euthyplociidae | Mayflies | Euthyplocia hecuba |  |
| Heptageniidae | Flat-headed mayflies | Rhithrogena germanica |  |
| Ichthybotidae | Mayflies | Ichthybotus hudsoni |  |
| Isonychiidae | Brush-leg mayflies | Isonychia bicolor |  |
| Leptohyphidae | Little stout crawler mayflies | Leptohyphes cornutillus |  |
| Leptophlebiidae | Prong-gilled mayflies | Atalophlebia australis |  |
| Machadorythidae | Mayflies | Machadorythus maculatus |  |
| Melanemerellidae | Mayflies | Melanemerella brasiliana |  |
| Metretopodidae | Cleft-footed minnow mayflies | Siphloplecton interlineatum |  |
| Neoephemeridae | Large square-gill mayflies | Neoephemera purpurea |  |
| Nesameletidae | Swimming mayflies | Nesameletus ornatus |  |
| Oligoneuriidae | Brush-leg mayflies | Homoeoneuria ammophila |  |
| Oniscigastridae | Swimming mayflies | Oniscigaster distans |  |
| Palingeniidae | Spiny-headed burrowing mayflies | Pentagenia vittigera |  |
| Polymitarcyidae | Pale burrowing mayflies | Ephoron virgo |  |
| Potamanthidae | Mayflies | Potamanthus luteus |  |
| Prosopistomatidae | Mayflies | Prosopistoma pearsonorum |  |
| Rallidentidae | Swimming mayflies | Rallidens mcfarlanei |  |
| Siphlaenigmatidae | Swimming mayflies | Siphlaenigma janae |  |
| Siphlonuridae | Primitive minnow mayflies | Siphlonurus occidentalis |  |
| Siphluriscidae | Mayflies | Siphluriscus chinensis |  |
| Teloganellidae | Mayflies | Teloganella indica |  |
| Teloganodidae | Mayflies | Indoganodes jobini |  |
| Tricorythidae | Mayflies | Tricorythus furcifer |  |
| Vietnamellidae | Chinese mayflies | Vietnamella sinensis |  |
