Japanese Alderfly vs European Spider Wasp
Side-by-side species comparison
| Attribute | Japanese Alderfly | European Spider Wasp |
|---|---|---|
| Scientific Name | Sialis japonica | Episyron albonotatum |
| Order | Megaloptera | Hymenoptera |
| Family | Sialidae | Pompilidae |
| Size | 15-25 mm wingspan | 8-14 mm |
| Habitat | Rivers & Streams | Beaches & Coastal |
| Diet | Predators | Predators |
| Regions | Japan, East Asia | Europe |
| 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.
European Spider Wasp
A medium-sized black spider wasp with white markings that hunts orb-weaving spiders across Europe. It nests in sandy soil near the edges of paths.
Did You Know?
It carries captured spiders by flying short distances while holding them underneath its body.