Oniscus
Introduction '''''Oniscus''''' is a genus of woodlice. It comprises five species, three of which are confined to northwestern Iberia (''Oniscus ancarensis'', ''O. galicianus'' and ''O. lusitanicus''), one to the Pyrenees (''Oniscus simonii''), and one of which, ''O. asellus'', is widespread across Europe and has been introduced to the Americas .
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