Eastern Weighted Casemaker vs Arctic Caddisfly
Side-by-side species comparison
| Attribute | Eastern Weighted Casemaker | Arctic Caddisfly |
|---|---|---|
| Scientific Name | Goera stylata | Apatania zonella |
| Order | Trichoptera | Trichoptera |
| Family | Goeridae | Apataniidae |
| Size | 8-12 mm | 6-9 mm |
| Habitat | Rivers & Streams | Ponds & Lakes |
| Diet | Omnivores | Omnivores |
| Regions | Europe | Arctic Scandinavia, Iceland, Greenland, Svalbard, Arctic Canada |
| Conservation | Least Concern | Least Concern |
Eastern Weighted Casemaker
A caddisfly of clean European streams that builds mineral cases with large lateral ballast stones. Larvae scrape algae from rock surfaces in moderate current.
Did You Know?
The lateral ballast stones are so precisely placed they appear to be glued on by hand.
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.