Armadillidium pictum Brandt, 1833


GB IUCN status: Least Concern
GB rarity status: Nationally Scarce


An attractively mottled pill-woodlouse (to 9mm). It shares its distinctive mottling and the dark patch on the 7th epimera with A. pulchellum and females can be difficult to separate. A. vulgare is never as attractively mottled, and lacks the dark patch on the 7th epimera (See Gregory & Richards, 2008).

J.P. Richards
Keith Lugg
Keith Lugg

Distribution and Habitat

This is a very rare woodlouse, known from cluster of sites in the English Lake District, the Pennines and the Welsh/English border counties. It is probably under-recorded. It is exclusively associated with semi-natural habitats, typically in hilly areas, including ancient deciduous woodland, rough and/or shady grassland and grikes in limestone pavement.

Although usually found under moss carpets and stones, amongst scree or within red-rotted timber, it can be beaten from shrubs and may occur under loose bark and within  rot holes high on mature trees.



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.



BRC Code