Western Grannom Caddis vs Little Sister Sedge
Side-by-side species comparison
| Attribute | Western Grannom Caddis | Little Sister Sedge |
|---|---|---|
| Scientific Name | Brachycentrus occidentalis | Cheumatopsyche campyla |
| Order | Trichoptera | Trichoptera |
| Family | Brachycentridae | Hydropsychidae |
| Size | 9-12 mm | 7-10 mm |
| Habitat | Rivers & Streams | Rivers & Streams |
| Diet | Omnivores | Omnivores |
| Regions | Europe | North America |
| Conservation | Least Concern | Least Concern |
Western Grannom Caddis
A widespread European caddisfly forming mass emergences in spring on alkaline rivers. Larvae build four-sided tapering cases and filter-feed in riffles.
Did You Know?
Spring Grannom hatches on English chalk streams can darken the sky with millions of emerging adults.
Little Sister Sedge
A small net-spinning caddisfly widespread in warm-water streams. Larvae tolerate moderate enrichment better than most Hydropsychidae.
Did You Know?
Larvae vibrate their bodies to increase water flow through their catch-nets.