''Platyarthrus hoffmannseggii'' is a species of woodlouse which is closely associated with ants' nests, particularly those of ''Lasius flavus'', ''Lasius niger'' and species of ''Myrmica'', where it feeds on ant droppings or mildew. It is white, 4 millimetres long, and has a distinctive oval shape and short antennae. Its distribution appears to follow those of the ants with which it lives, and the British Isles are the north-westerly limit of its range. Elsewhere, ''P. hoffmannseggii'' extends south.. more
Similar species: Brood Pouch Crustaceans
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