Weighted Casemaker vs Arctic Caddisfly
Side-by-side species comparison
| Attribute | Weighted Casemaker | Arctic Caddisfly |
|---|---|---|
| Scientific Name | Goera pilosa | Apatania zonella |
| Order | Trichoptera | Trichoptera |
| Family | Goeridae | Apataniidae |
| Size | 9-13 mm | 6-9 mm |
| Habitat | Rivers & Streams | Ponds & Lakes |
| Diet | Detritivores | Omnivores |
| Regions | Europe | Arctic Scandinavia, Iceland, Greenland, Svalbard, Arctic Canada |
| Conservation | Least Concern | Least Concern |
Weighted Casemaker
A caddisfly that attaches heavy ballast stones to the sides of its case for stability. Larvae are found in fast-flowing stony streams.
Did You Know?
The ballast stones can weigh several times more than the larva itself, preventing displacement by floods.
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.