Large Alderfly vs Spring Fishfly
Side-by-side species comparison
| Attribute | Large Alderfly | Spring Fishfly |
|---|---|---|
| Scientific Name | Sialis nigripes | Chauliodes rastricornis |
| Order | Megaloptera | Megaloptera |
| Family | Sialidae | Corydalidae |
| Size | 15-20 mm | 25-35 mm |
| Habitat | Rivers & Streams | Rivers & Streams |
| Diet | Herbivores | Omnivores |
| Regions | North America | North America |
| Conservation | Least Concern | Least Concern |
Large Alderfly
A relatively large alderfly with dark wings and black legs found near rivers in eastern North America. Adults rest on streamside vegetation during the day.
Did You Know?
Alderfly larvae breathe through feathery gills along their abdomen and a single long tail filament that acts as an additional gill.
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.