Australian Giant Mayfly vs Small Brown Stonefly

Side-by-side species comparison

Attribute Australian Giant Mayfly Small Brown Stonefly
Scientific Name Atalophlebia australis Nemoura cinerea
Order Ephemeroptera Plecoptera
Family Leptophlebiidae Nemouridae
Size 12-18 mm 6-10 mm
Habitat Rivers & Streams Ponds & Lakes
Diet Herbivores Herbivores
Regions Australia Europe, Asia
Conservation Least Concern Least Concern

Australian Giant Mayfly

One of the largest Australian mayflies, found in clean streams of southeastern Australia. Nymphs have feathery gills along their abdomens.

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Did You Know?

It belongs to the most species-rich mayfly family in the Southern Hemisphere.

Small Brown Stonefly

A very common small brown stonefly found in a wide range of freshwater habitats across Europe. It is one of the most tolerant stoneflies to mild pollution.

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Did You Know?

Unlike most stonefly species that require pristine water, this species can tolerate mildly enriched conditions, making it one of the last stoneflies found in degraded streams.