Black Sedge vs Green Sedge
Side-by-side species comparison
| Attribute | Black Sedge | Green Sedge |
|---|---|---|
| Scientific Name | Silo nigricornis | Rhyacophila dorsalis |
| Order | Trichoptera | Trichoptera |
| Family | Goeridae | Rhyacophilidae |
| Size | 7-9 mm body | 10-14 mm |
| Habitat | Rivers & Streams | Rivers & Streams |
| Diet | Omnivores | Predators |
| Regions | Europe | Europe, Asia |
| Conservation | Least Concern | Least Concern |
Black Sedge
A caddisfly whose larvae build heavy cases from sand grains cemented with silk. Found in clean, stony streams. Cases have lateral flanges of larger stones for ballast.
Did You Know?
Larval cases have added flanges of larger stones that act as ballast, preventing the case from being swept away.
Green Sedge
A free-living caddisfly larva that does not build a case, instead roaming the streambed as an active predator. Adults have greenish wings.
Did You Know?
Unlike most caddisflies, green sedge larvae are caseless predators that hunt like underwater wolves among the stream cobbles.