Southern Salmonfly vs Small Rivulet

Side-by-side species comparison

Attribute Southern Salmonfly Small Rivulet
Scientific Name Neoperla clymene Perizoma alchemillata
Order Plecoptera Lepidoptera
Family Perlidae Geometridae
Size 12-18 mm 18-22 mm wingspan
Habitat Rivers & Streams Rivers & Streams
Diet Predators Herbivores
Regions North America Europe
Conservation Least Concern Least Concern

Southern Salmonfly

A medium-sized stonefly of warm southeastern streams with nocturnal adults. Nymphs are active predators in gravel substrates.

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Did You Know?

Adults are strongly attracted to lights and are often collected far from water at night.

Small Rivulet

A delicate small moth found in damp habitats where hemp agrimony grows. The larvae feed inside the flowers. Has subtle grey and white wing markings.

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Did You Know?

The larvae develop entirely within hemp agrimony flower heads, emerging only to pupate.