Appalachian Springfly vs Glacial Stonefly

Side-by-side species comparison

Attribute Appalachian Springfly Glacial Stonefly
Scientific Name Remenus bilobatus Leuctra alpina
Order Plecoptera Plecoptera
Family Perlodidae Leuctridae
Size 8-12 mm 6-9 mm body length
Habitat Rivers & Streams Mountains
Diet Predators Detritivores
Regions North America Alps, Pyrenees
Conservation Vulnerable Least Concern

Appalachian Springfly

A rare springfly restricted to a few clean Appalachian headwater streams. Nymphs are predatory on small invertebrates among gravel substrates.

💡

Did You Know?

Its extremely limited range makes it one of the rarest stonefly species in North America.

Glacial Stonefly

A small, slender stonefly found in the coldest alpine headwater streams. Its needle-like wings are rolled tightly around its body at rest.

💡

Did You Know?

Its rolled-wing resting posture gives the family its common name of needle flies.