Mire pill beetle  (Curimopsis nigrita)

Three sites are known to support the species, all of which are in the Humberhead Levels of south Yorkshire and Lincolnshire (2). Thorne and Hatfield Moors are the largest sites, and each support many small and fragmented populations (2). A small isolated population was found in a tiny patch of suitable habitat at Haxey Grange Fen (2). Outside of Britain, this pill beetle occurs in southern Sweden, Denmark and northern areas of Poland and Germany (4).

As the common name suggests, this species inhabits lowland raised mires (2), which take the form of raised mounds of peat, the surfaces of which are above the water table (5). This beetle seems to prefer damp, open peat where plenty of mosses grow (2).