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Oniscus asellus


A woodlouse (known by many common names: see below; plural woodlice) is a crustacean with a rigid, segmented, long exoskeleton and fourteen jointed limbs. Woodlice form the suborder Oniscidea within the order Isopoda, with over 3,000 known species. Woodlice in the genus Armadillidium can roll up into an almost perfect sphere as a defensive mechanism, hence some of the common names such as pill bug or roly-poly. Most woodlice, however, cannot do this.


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pamsai 5 years ago

thank you loarie

loarie 5 years ago
Christiane 11 years ago

WOW.. Great spotting and information.. I have moved it to Arthropods for you..

Spotted by

South and West Kerry, Ireland

Spotted on Jul 13, 2012
Submitted on Jul 13, 2012

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Oniscus asellus Oniscus asellus Oniscus asellus Common Woodlouse

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