Small Amber Spinner vs Common Acerentomid

Side-by-side species comparison

Attribute Small Amber Spinner Common Acerentomid
Scientific Name Caenis macrura Acerentomon doderoi
Order Ephemeroptera Protura
Family Caenidae Acerentomidae
Size 3-5 mm 0.5-1.5 mm
Habitat Ponds & Lakes Forests
Diet Omnivores Omnivores
Regions Europe Europe
Conservation Least Concern Not Evaluated

Small Amber Spinner

A tiny mayfly whose amber-colored spinners fall to the water in dense clouds. Nymphs live among fine sediments in slow-flowing water.

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Did You Know?

Spinner falls can be so dense they coat the water surface like a film, triggering frenzied fish feeding.

Common Acerentomid

A tiny eyeless proturan found in forest soils across Europe. It walks on only four legs, holding its forelegs forward as antennae.

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Did You Know?

Proturans are the only hexapods that add body segments as they molt, starting with nine abdominal segments and gaining three more.