Arctic Caddisfly vs Green Sedge
Side-by-side species comparison
| Attribute | Arctic Caddisfly | Green Sedge |
|---|---|---|
| Scientific Name | Apatania zonella | Rhyacophila dorsalis |
| Order | Trichoptera | Trichoptera |
| Family | Apataniidae | Rhyacophilidae |
| Size | 6-9 mm | 10-14 mm |
| Habitat | Ponds & Lakes | Rivers & Streams |
| Diet | Omnivores | Predators |
| Regions | Arctic Scandinavia, Iceland, Greenland, Svalbard, Arctic Canada | Europe, Asia |
| Conservation | Least Concern | Least Concern |
Arctic Caddisfly
A small, hairy-winged caddisfly with dark brown wings held tent-like over the body. Larvae build portable cases from sand grains and small stones. It is one of the most northerly distributed caddisflies in the world.
Did You Know?
Some Arctic populations of this caddisfly reproduce by parthenogenesis, with females producing offspring without mating.
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.