This species, the 'jet-black ant', is not rare in southern England and Wales but always tends to be locally uncommon, with often only a few isolated nests known to recorders in any one locality. There appears to be contraction in the range of L. fuliginosus in northern and central England and also in the south of the Irish Republic. The species has so far not been found in Scotland. It is quite likely, however, that this paucity of records is due to a lack of recent recording effort in certain areas, notably: Cumbria, Lancashire, Cheshire, Avon, Gloucestershire, Leicestershire and Cambridgeshire; Isle of Man and Ireland. Unlike Formica rufa there are probably more local populations yet to be discovered as, despite its conspicuous features (quite large, shiny black workers foraging in long trails), this species often goes unnoticed.