Stripetail Stonefly vs Giant Japygid

Side-by-side species comparison

Attribute Stripetail Stonefly Giant Japygid
Scientific Name Isoperla bilineata Metajapyx subterraneus
Order Plecoptera Diplura
Family Perlodidae Japygidae
Size 10-15 mm 10-20 mm
Habitat Rivers & Streams Caves
Diet Predators Predators
Regions Eastern North America Europe
Conservation Least Concern Least Concern

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.

Giant Japygid

One of the larger diplurans, found in deep soil and caves in southern Europe. It is a voracious predator of other soil invertebrates.

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Did You Know?

It is one of the few diplurans large enough to be visible to the naked eye without magnification.