Lake Stonefly vs Claassenia Stonefly

Side-by-side species comparison

Attribute Lake Stonefly Claassenia Stonefly
Scientific Name Megaleuctra complicata Claassenia sabulosa
Order Plecoptera Plecoptera
Family Leuctridae Perlidae
Size 8-14 mm 25-40 mm
Habitat Mountains Rivers & Streams
Diet Detritivores Predators
Regions North America Western North America
Conservation Near Threatened Least Concern

Lake Stonefly

A rare stonefly found in cold mountain lake outlets and spring-fed streams.

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Did You Know?

Its restricted cold-water habitat makes it vulnerable to climate warming.

Claassenia Stonefly

A large predatory stonefly with a mottled yellow and brown pattern. The nymphs are active nocturnal hunters that roam the stream bed seeking prey.

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Did You Know?

Nymphs often crawl out of the water at night to hunt, making them vulnerable to bats and spiders.