Rock Caddisfly vs Small Square-Gilled Mayfly
Side-by-side species comparison
| Attribute | Rock Caddisfly | Small Square-Gilled Mayfly |
|---|---|---|
| Scientific Name | Goera calcarata | Caenis luctuosa |
| Order | Trichoptera | Ephemeroptera |
| Family | Goeridae | Caenidae |
| Size | 8-12 mm | 3-6 mm |
| Habitat | Rivers & Streams | Ponds & Lakes |
| Diet | Omnivores | Omnivores |
| Regions | Europe | Europe |
| 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.
Small Square-Gilled Mayfly
A minute mayfly with distinctive square-shaped gills on its nymphs. Adults swarm in enormous numbers near water at twilight.
Did You Know?
The enlarged second gill plate acts as a protective cover over the remaining delicate gills.