Oniscus

{{Short description|Genus of woodlice}}

{{Automatic taxobox

| image =Porcellio_scaber_-_male_top_1_(aka).jpg

| image_caption = Oniscus asellus

| taxon = Oniscus

| authority = Linnaeus, 1758 {{ITIS |id=206378 |taxon=Oniscus}}

| subdivision_ranks = Species

| subdivision =

• Oniscus ancarensis Bilton, 1992
• Oniscus asellus Linnaeus, 1758
• Oniscus galicianus Bilton, 1997
• Oniscus lusitanus Verhoeff, 1908
• Oniscus simonii Budde-Lund, 1885

}}

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 .{{cite journal |url=http://www.oniscidea-catalog.naturkundemuseum-bw.de/Cat_terr_isop.pdf |title=World catalog of terrestrial isopods (Isopoda: Oniscidea) — revised and updated version |first=Helmut |last=Schmalfuss |year=2003 |journal=Stuttgarter Beiträge zur Naturkunde |series=Serie A |volume=654 |pages=1–341}}