- Source: Trichoniscus pygmaeus
Trichoniscus pygmaeus is a species of pygmy woodlouse native to Britain and Ireland. It has also been seen in the US in a limited distribution area.
Appearance
This species is about 2.5 mm (0.1 in) in length and is pinkish to yellowish. It has a semi transparent shell and a yellow to pinkish line down the middle.