Rock Caddisfly vs Sand-Dwelling Caddis
Side-by-side species comparison
| Attribute | Rock Caddisfly | Sand-Dwelling Caddis |
|---|---|---|
| Scientific Name | Goera calcarata | Molanna angustata |
| Order | Trichoptera | Trichoptera |
| Family | Goeridae | Molannidae |
| Size | 8-12 mm | 10-14 mm |
| Habitat | Rivers & Streams | Ponds & Lakes |
| Diet | Omnivores | Detritivores |
| Regions | Europe | Europe, Northern Asia |
| Conservation | Least Concern | Least Concern |
Rock Caddisfly
A caddisfly of limestone streams whose cases incorporate calcareous sand grains and pebble ballast. Larvae scrape algae from rock surfaces.
Did You Know?
The calcareous case material provides partial camouflage against the pale limestone streambed.
Sand-Dwelling Caddis
A caddisfly whose larvae build flattened shield-shaped cases from sand grains. The wide case acts like a snowshoe, preventing the larva from sinking in soft sediment.
Did You Know?
Its case has lateral flanges that distribute weight and prevent sinking into soft sand.