Pygmy-woodlouse

Guides

• Trichoniscus pygmaeus

  Least Pygmy Woodlouse

  Trichoniscus pygmaeus is a minute terrestrial isopod commonly known as the Least Pygmy Woodlouse. It is native to Britain and Ireland, with a limited introduced distribution in the United States. The species is among the smallest woodlice in its native range, measuring approximately 2.5 mm in length. Its translucent, pinkish-yellow coloration and diminutive size distinguish it from other European woodlice.

  woodlousepygmy-woodlouseterrestrial-isopodBritainIrelandintroduced-speciestranslucentminutedorsal-line