Speckled Peter Stonefly vs North American Alderfly
Side-by-side species comparison
| Attribute | Speckled Peter Stonefly | North American Alderfly |
|---|---|---|
| Scientific Name | Paragnetina media | Sialis infumata |
| Order | Plecoptera | Megaloptera |
| Family | Perlidae | Sialidae |
| Size | 15-22 mm | 15-20 mm wingspan |
| Habitat | Rivers & Streams | Rivers & Streams |
| Diet | Predators | Predators |
| Regions | North America | Eastern North America |
| 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.
North American Alderfly
A small, dark-winged alderfly common near ponds and slow streams across eastern North America. Adults are clumsy fliers often found resting on streamside plants.
Did You Know?
Larvae spend one to two years burrowing in pond mud before emerging for a brief adult life of just days.