Weedy Water Sedge vs Grannom Caddisfly
Side-by-side species comparison
| Attribute | Weedy Water Sedge | Grannom Caddisfly |
|---|---|---|
| Scientific Name | Leptocerus tineiformis | Brachycentrus subnubilus |
| Order | Trichoptera | Trichoptera |
| Family | Leptoceridae | Brachycentridae |
| Size | 7-11 mm | 8-12 mm |
| Habitat | Ponds & Lakes | Rivers & Streams |
| Diet | Detritivores | Detritivores |
| Regions | Europe | Europe |
| Conservation | Least Concern | Least Concern |
Weedy Water Sedge
A slender caddisfly associated with weedy European lakes and canals. Larvae build cases from fine sand and plant fragments.
Did You Know?
Adults are strongly attracted to light and often appear in large numbers at lakeside lamps.
Grannom Caddisfly
A small dark caddisfly that produces massive spring hatches on European rivers. Larvae build distinctive square-sectioned cases from silk and plant fibers.
Did You Know?
Grannom hatches are so dense on some rivers that local people historically swept up mounds of dead adults to use as fertilizer.