Japanese Giant Stonefly vs Rain Beetle Hunter
Side-by-side species comparison
| Attribute | Japanese Giant Stonefly | Rain Beetle Hunter |
|---|---|---|
| Scientific Name | Oyamia lugubris | Calosoma cancellatum |
| Order | Plecoptera | Coleoptera |
| Family | Perlidae | Carabidae |
| Size | 25-35 mm | 18-25 mm |
| Habitat | Mountains | Grasslands |
| Diet | Predators | Predators |
| Regions | Japan | North America, from Canada to Mexico |
| Conservation | Least Concern | Least Concern |
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.
Rain Beetle Hunter
A medium to large caterpillar hunter with dark elytra marked by rows of rectangular pits giving a grid-like appearance. It is one of the most common Calosoma species across North American prairies.
Did You Know?
It emerges in massive numbers after rain events on the Great Plains, earning the nickname rain beetle, and can be found running across roads in huge aggregations.