Japanese Dobsonfly vs Summer Fishfly
Side-by-side species comparison
| Attribute | Japanese Dobsonfly | Summer Fishfly |
|---|---|---|
| Scientific Name | Protohermes grandis | Chauliodes pectinicornis |
| Order | Megaloptera | Megaloptera |
| Family | Corydalidae | Corydalidae |
| Size | 40-60 mm body length | 25-40 mm |
| Habitat | Rivers & Streams | Rivers & Streams |
| Diet | Predators | Omnivores |
| Regions | East Asia, Japan | North America |
| Conservation | Least Concern | Least Concern |
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).
Summer Fishfly
A medium-sized fishfly emerging in summer with distinctive dark-veined wings and feathery antennae. Larvae develop in muddy stream bottoms.
Did You Know?
Unlike dobsonfly larvae that prefer fast-flowing water, summer fishfly larvae thrive in slow muddy pools and swamps.