Ephemeroptera: Heptageniidae (Clinging Mayflies)
- 3 pairs of jointed legs, each with a single claw; 3 tail-like filament.
- 1 pair of wingpads apparent.
- Flattened gills on abdomen.
- Body dorso-ventrally (top to bottom) flattened.
- Large eyes on top of head.
Length: 5 mm to 22 mm
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| Clinging Mayfly |
Updated: Apr 06, 2007. |
 Peter Chen. |
