Flat-headed Mayfly vs Australian Giant Mayfly

Side-by-side species comparison

Attribute Flat-headed Mayfly Australian Giant Mayfly
Scientific Name Epeorus assimilis Atalophlebia australis
Order Ephemeroptera Ephemeroptera
Family Heptageniidae Leptophlebiidae
Size 10-14 mm 12-18 mm
Habitat Rivers & Streams Rivers & Streams
Diet Herbivores Herbivores
Regions Europe Australia
Conservation Least Concern Least Concern

Flat-headed Mayfly

A stream-dwelling mayfly nymph with a flattened body for clinging to rocks in rapids.

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Did You Know?

Its flattened nymph shape allows it to live in the boundary layer of fast currents.

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.