Snail-Case Caddis vs Eastern Weighted Casemaker
Side-by-side species comparison
| Attribute | Snail-Case Caddis | Eastern Weighted Casemaker |
|---|---|---|
| Scientific Name | Helicopsyche borealis | Goera stylata |
| Order | Trichoptera | Trichoptera |
| Family | Helicopsychidae | Goeridae |
| Size | 5-7 mm | 8-12 mm |
| Habitat | Rivers & Streams | Rivers & Streams |
| Diet | Omnivores | Omnivores |
| Regions | North America | Europe |
| Conservation | Least Concern | Least Concern |
Snail-Case Caddis
A remarkable caddisfly whose larvae build coiled cases from sand grains that closely resemble tiny snail shells. It is widespread in North American streams.
Did You Know?
Its spiral case is so convincing that early naturalists classified the larvae as snails rather than insects.
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.