Whirligig Beetle vs Japanese Giant Stonefly
Side-by-side species comparison
| Attribute | Whirligig Beetle | Japanese Giant Stonefly |
|---|---|---|
| Scientific Name | Gyrinus natator | Oyamia lugubris |
| Order | Coleoptera | Plecoptera |
| Family | Gyrinidae | Perlidae |
| Size | 5-7 mm | 25-35 mm |
| Habitat | Ponds & Lakes | Mountains |
| Diet | Predators | Predators |
| Regions | Europe | Japan |
| Conservation | Least Concern | Least Concern |
Whirligig Beetle
A small, oval, shiny black beetle that spins in rapid circles on the water surface. Its eyes are divided in two, allowing it to see above and below water simultaneously.
Did You Know?
Whirligig beetles have uniquely split compound eyes, with one pair looking above the waterline and another pair looking below it at the same time.
Japanese Giant Stonefly
A large predatory stonefly found in mountainous streams of Japan. Nymphs have powerful mandibles for capturing prey in swift currents.
Did You Know?
It is an indicator of pristine water quality in Japanese mountain streams.