Stripetail Stonefly vs Large Stonefly

Side-by-side species comparison

Attribute Stripetail Stonefly Large Stonefly
Scientific Name Isoperla bilineata Perla bipunctata
Order Plecoptera Plecoptera
Family Perlodidae Perlidae
Size 10-15 mm 20-30 mm
Habitat Rivers & Streams Rivers & Streams
Diet Predators Predators
Regions Eastern North America Europe
Conservation Least Concern Near Threatened

Stripetail Stonefly

A yellow-green stonefly with two distinctive dark stripes on its tails. It is common in clean North American streams during spring.

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Did You Know?

Its distinctively striped cerci make it one of the easiest North American stoneflies to identify.

Large Stonefly

One of the largest European stoneflies with a distinctive pair of pale spots on its head. Its predatory nymphs live among stones in fast-flowing rivers.

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Did You Know?

Large stonefly nymphs require three years to complete development, making them particularly vulnerable to long-term changes in water quality.