Tube-Making Caddis vs Yellow May Dun
Side-by-side species comparison
| Attribute | Tube-Making Caddis | Yellow May Dun |
|---|---|---|
| Scientific Name | Psychomyia flavida | Heptagenia sulphurea |
| Order | Trichoptera | Ephemeroptera |
| Family | Psychomyiidae | Heptageniidae |
| Size | 5-8 mm | 10-15 mm |
| Habitat | Rivers & Streams | Rivers & Streams |
| Diet | Gall Makers | Omnivores |
| Regions | North America | Europe |
| Conservation | Least Concern | Least Concern |
Tube-Making Caddis
A small caddisfly whose larvae build silken tubes cemented to rock surfaces in rivers. The tubes create a network of galleries on submerged stones.
Did You Know?
Entire rock surfaces can be covered in a patchwork of silken tubes built by dense colonies.
Yellow May Dun
A bright sulfur-yellow mayfly common across European rivers during early summer. Its flat nymphs are adapted to fast-flowing water on stony substrates.
Did You Know?
The striking yellow color of this mayfly makes it one of the most easily recognizable species on European rivers.