Spring Fishfly vs Japanese Dobsonfly
Side-by-side species comparison
| Attribute | Spring Fishfly | Japanese Dobsonfly |
|---|---|---|
| Scientific Name | Chauliodes rastricornis | Protohermes grandis |
| Order | Megaloptera | Megaloptera |
| Family | Corydalidae | Corydalidae |
| Size | 25-35 mm | 40-60 mm body length |
| Habitat | Rivers & Streams | Rivers & Streams |
| Diet | Omnivores | Predators |
| Regions | North America | East Asia, Japan |
| Conservation | Least Concern | Least Concern |
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.
Japanese Dobsonfly
A large aquatic insect known as 'hebi-tonbo' (snake dragonfly) in Japanese. The adult males have elongated, curved mandibles. Larvae called 'magotaro-mushi' are used as fishing bait.
Did You Know?
Dobsonfly larvae are prized as live fishing bait in Japan and are collected from stream rocks by anglers targeting ayu (sweetfish).