Grannom Caddisfly vs Green-banded Swallowtail
Side-by-side species comparison
| Attribute | Grannom Caddisfly | Green-banded Swallowtail |
|---|---|---|
| Scientific Name | Brachycentrus subnubilus | Papilio nireus |
| Order | Trichoptera | Lepidoptera |
| Family | Brachycentridae | Papilionidae |
| Size | 8-12 mm | 80-100 mm wingspan |
| Habitat | Rivers & Streams | Rivers & Streams |
| Diet | Detritivores | Nectar Feeders |
| Regions | Europe | Sub-Saharan Africa |
| Conservation | Least Concern | Least Concern |
Grannom Caddisfly
A small dark caddisfly that produces massive spring hatches on European rivers. Larvae build distinctive square-sectioned cases from silk and plant fibers.
Did You Know?
Grannom hatches are so dense on some rivers that local people historically swept up mounds of dead adults to use as fertilizer.
Green-banded Swallowtail
A striking black swallowtail with brilliant metallic blue-green bands across both wings. It is a fast flier often seen mud-puddling along rivers.
Did You Know?
Males gather in large numbers at muddy riverbanks to drink mineral-rich water, a behavior called mud-puddling.