Western Ameletid Mayfly vs Scalloped Hook-tip

Side-by-side species comparison

Attribute Western Ameletid Mayfly Scalloped Hook-tip
Scientific Name Ameletus cooki Falcaria lacertinaria
Order Ephemeroptera Lepidoptera
Family Ameletidae Drepanidae
Size 8-12 mm 30-38 mm wingspan
Habitat Mountains Heathland
Diet Omnivores Omnivores
Regions North America Europe, temperate Asia, Japan
Conservation Least Concern Least Concern

Western Ameletid Mayfly

A streamlined mayfly found in cold mountain streams of the Pacific Northwest. Nymphs are agile swimmers that dart between cobbles in riffles.

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Did You Know?

Nymphs are strong enough swimmers to move upstream against moderate currents.

Scalloped Hook-tip

A small moth with strongly curved wingtips and scalloped wing margins that rests resembling a dead leaf. Its mottled brown and grey colouring completes the disguise.

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Did You Know?

The hooked wing tips are unique among moth families and give the Drepanidae their alternative name, hook-tips.