Armadillidium vulgare (Latreille, 1804)

Common name

Common Pill Woodlouse

Status

GB IUCN status: Least Concern

Identification

This large pill-woodlouse (to 18 mm) is often uniform slate grey, but can be highly variable in colour and mottled forms are often seen.  However, it lacks the dark patch on the 7th epimera, and the well developed ornate mottling, characteristic of A. pulchellum or A. pictum. See Gregory & Richards (2008).

In south Wales and southern England it can be confused with A. depressum (which can be locally common in gardens, etc).

Robert Jones
Bill Urwin
J.P. Richards
J.P. Richards
Keith Lugg

Distribution and Habitat

It is locally abundant in south-eastern England and is common in most habitats.  It becomes much scarcer further north and restricted to lowland sites with calcareous soils and high levels of insolation.  Scottish sites are mostly coastal (the record from the northern coast is erroneus).

It is most easily found under stones and dead wood, but also amongst grass litter, within tussocks, etc.

Distribution

Reference

Gregory, S. (2009) Woodlice and Waterlice (Isopoda: Oniscidea & Asellota) in Britain and Ireland.  Field Studies Council/Centre for Ecology & Hydrology.

Gregory, S. & Richards, P. (2008) Comparison of three often mis-identified species of pill-woodlouse Armadillidium (Isopoda: Oniscidea). Bulletin of the British Myriapod & Isopod Group, 23: 9-12.

idBmigTaxa

79

BRC Code

Cru_1092