Speckled Peter Stonefly vs Lake Stonefly

Side-by-side species comparison

Attribute Speckled Peter Stonefly Lake Stonefly
Scientific Name Paragnetina media Megaleuctra complicata
Order Plecoptera Plecoptera
Family Perlidae Leuctridae
Size 15-22 mm 8-14 mm
Habitat Rivers & Streams Mountains
Diet Predators Detritivores
Regions North America North America
Conservation Least Concern Near Threatened

Speckled Peter Stonefly

A medium-sized patterned stonefly of eastern streams with distinctive speckled wing markings. Nymphs are voracious predators among cobbles.

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Did You Know?

Nymphs have been observed actively stalking prey rather than simply ambushing passing invertebrates.

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.