Porcellio spinicornis


A particularly attractive woodlouse. Fully grown it reaches about 12 mm long. It has a black head, black eyes, and a dark central stripe with a row of yellow blotches down either side. Antennae with two flagellal segments

Similar Species

 Philoscia muscorum (Common Striped Woodlouse) also has a dark central band but has a 'stepped' outline, unlike the smoother outline of Porcellio spinicornis.

Identification difficulty

It is common in gardens where it likes mortared walls.

When to see it

All year round.

Life History

It can run quite fast, but usually stays still for a while when first disturbed.

UK Status

Widespread and locally common in Britain.

VC55 Status

Common in Leicestershire and Rutland.

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Leicestershire & Rutland Map


Yellow squares = NBN records (all known data)
Coloured circles = NatureSpot records: 2020+ | 2015-2019 | pre-2015

UK Map