Scarlet Tiger Moth vs Trico Mayfly

Side-by-side species comparison

Attribute Scarlet Tiger Moth Trico Mayfly
Scientific Name Callimorpha dominula Tricorythodes stygiatus
Order Lepidoptera Ephemeroptera
Family Erebidae Leptohyphidae
Size 45-55 mm wingspan 3-6 mm
Habitat Rivers & Streams Rivers & Streams
Diet Omnivores Detritivores
Regions Europe North America
Conservation Least Concern Least Concern

Scarlet Tiger Moth

A striking day-flying moth with black forewings spotted with white and yellow, and brilliant scarlet hindwings. It played a key role in ecological genetics research.

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Did You Know?

E.B. Ford used this species for his pioneering studies on genetic polymorphism and ecological genetics.

Trico Mayfly

A tiny mayfly that forms enormous morning spinner falls over calm streams and rivers. Males have distinctive white bodies with black thoraxes.

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Did You Know?

Trico spinner falls create such dense blankets of spent mayflies on the water surface that trout gorge themselves to satiation.