Rusty Sedge vs American Grannom
Side-by-side species comparison
| Attribute | Rusty Sedge | American Grannom |
|---|---|---|
| Scientific Name | Hydropsyche saxonica | Brachycentrus americanus |
| Order | Trichoptera | Trichoptera |
| Family | Hydropsychidae | Brachycentridae |
| Size | 10-13 mm | 9-13 mm |
| Habitat | Rivers & Streams | Rivers & Streams |
| Diet | Omnivores | Omnivores |
| Regions | Europe | North America |
| Conservation | Least Concern | Least Concern |
Rusty Sedge
A net-spinning caddisfly of clean upland European streams sensitive to organic pollution. Larvae construct fine-meshed capture nets between stones.
Did You Know?
Its presence is used as a biological indicator of excellent water quality in European river assessments.
American Grannom
A case-building caddisfly whose larvae attach their cases to rocks in fast current and filter-feed. Cases are chimney-shaped and built from silk and plant fragments.
Did You Know?
Larvae can switch between filter-feeding and scraping algae depending on current speed.