Representatives of Mayfly Families (Ephemeroptera)
| Family | Image | Details |
|---|---|---|
| Baetidae |  |
Antennae usually two to three times width of head |
| Baetidae |  |
|
| Baetiscidae |  |
|
| Ameletidae |  |
|
| Caenidae |  |
|
| Isonychiidae |  |
Forelegs with dense row of hairs |
| Isonychiidae |  |
|
| Siphlonuridae |  |
|
| Ephemeridae |  |
|
| Ephemeridae |  |
Antennae with whorls of long setae |
| Potamanthidae |  |
|
| Polymitarcyidae |  |
|
| Heptageniidae |  |
|
| Ephemerellidae |  |
|
| Leptophlebiidae |  |
|
| Tricorythidae |  |
- Gills arise from sides of abdomen
- Body ending with two or three elongate tails
- Length from 3 to 20mm (not including tails)