Japanese Alderfly vs Spring Fishfly
Side-by-side species comparison
| Attribute | Japanese Alderfly | Spring Fishfly |
|---|---|---|
| Scientific Name | Sialis japonica | Chauliodes rastricornis |
| Order | Megaloptera | Megaloptera |
| Family | Sialidae | Corydalidae |
| Size | 15-25 mm wingspan | 25-35 mm |
| Habitat | Rivers & Streams | Rivers & Streams |
| Diet | Predators | Omnivores |
| Regions | Japan, East Asia | North America |
| Conservation | Least Concern | Least Concern |
Japanese Alderfly
A medium-sized alderfly found in ponds and slow streams across Japan. It is one of the most common megalopterans in East Asian lowland waters.
Did You Know?
It is one of the few megalopterans adapted to living in rice paddy fields.
Spring Fishfly
A medium-sized fishfly with pectinate antennae found in eastern North America. Adults are attracted to lights near rivers and streams during spring.
Did You Know?
Spring fishflies can be distinguished from dobsonflies by their feathery, comb-like antennae and smaller body size.