page_title: List of woodlice of the British Isles
section_title: Oniscidae
hierarchical_section_title: List of woodlice of the British Isles / Oniscidae
caption_attribution_description: English: Oniscus asellus, Nied, Frankfurt/Main, Germany
context_page_description: Woodlice are the most species-rich group of terrestrial crustaceans. Of the 3,637 species found worldwide, some 35 species in 10 families are native to the British Isles. One of these species, Acaeroplastes melanurus, had been considered extinct in the British Isles but was rediscovered in 2002 at its only site, and a further ten species have become naturalised in greenhouses, presumably transported with exotic plants. Five species are especially common throughout the British Isles, and are known as the "famous five species". They are Oniscus asellus, Porcellio scaber, Philoscia muscorum, Trichoniscus pusillus and Armadillidium vulgare. One species, Metatrichoniscoides celticus, is endemic to Glamorgan, and is listed as a vulnerable species in the IUCN Red List.
caption: Oniscus asellus
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