Common woodlouse

Woodlouse
Woodlouse

The common woodlouse (Oniscus asellus) is usually found under stones or on rotting wood.  This one was hiding with dozens of friends under the bark of a rotting beech trunk.

Pale patches on the back of the louse are used to store calcium for building a new under-layer of exoskeleton.  When the woodlouse moults, in eats its exuviated exoskeleton.

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