Speckled Peter Stonefly vs Large Alpine Stonefly
Side-by-side species comparison
| Attribute | Speckled Peter Stonefly | Large Alpine Stonefly |
|---|---|---|
| Scientific Name | Paragnetina media | Perla grandis |
| Order | Plecoptera | Plecoptera |
| Family | Perlidae | Perlidae |
| Size | 15-22 mm | 20-33 mm body length |
| Habitat | Rivers & Streams | Mountains |
| Diet | Predators | Omnivores |
| Regions | North America | Europe, Alps, Pyrenees |
| Conservation | Least Concern | Least Concern |
Speckled Peter Stonefly
A medium-sized patterned stonefly of eastern streams with distinctive speckled wing markings. Nymphs are voracious predators among cobbles.
Did You Know?
Nymphs have been observed actively stalking prey rather than simply ambushing passing invertebrates.
Large Alpine Stonefly
One of the largest European stoneflies, found in clean mountain rivers. Its nymphs take several years to develop in cold water.
Did You Know?
Nymphs may take up to four years to complete development in cold alpine waters.