Sweltsa Green Stonefly vs Tiny Winter Black Stonefly
Side-by-side species comparison
| Attribute | Sweltsa Green Stonefly | Tiny Winter Black Stonefly |
|---|---|---|
| Scientific Name | Sweltsa borealis | Capnia nigra |
| Order | Plecoptera | Plecoptera |
| Family | Chloroperlidae | Capniidae |
| Size | 6-9 mm | 4-8 mm |
| Habitat | Forests | Rivers & Streams |
| Diet | Predators | Detritivores |
| Regions | North America | Europe, Northern Asia |
| Conservation | Least Concern | Least Concern |
Sweltsa Green Stonefly
A small northern green stonefly found in cold boreal and montane streams. Nymphs prey on early-instar chironomids and other tiny larvae.
Did You Know?
This species is one of the most cold-adapted stoneflies and can be active in near-freezing water.
Tiny Winter Black Stonefly
A tiny black stonefly that emerges in late winter across European streams. It is among the earliest insects to appear each year.
Did You Know?
Females are often wingless or short-winged, relying on walking rather than flight to find mates.