Colletes montanus MORAWITZ 1876; Colletes suecica AURIVILLIUS 1903; Colletes kudiensis COCKERELL 1924; Colletes yasumatsui HIRASHIMA & IKUDOME 1989
This species was originally found for the first time in the British Isles in south-west Scotland in July 1899 (Saunders, 1899), the record being published under the name Colletes montanus). However, it is most widely distributed in the Western Isles and especially in Ireland. Indeed, it is the only bee that is more widespread in that country than in Britain. On mainland Scotland this mining bee has been recorded from Dumfries and Galloway (Tons Warren), Argyll (Macrihanish Dunes, Kintyre (S Miles pers. comm.)) and Strathclyde (Irvine Moor, near Ayr). It is still present (2010) at Irvine Moor (B & S Little, pers. comm.). However, it is more widely distributed on the islands off the west coast: Colonsay and Tiree (Strathclyde), and Barra, South Uist and Benbecula (Western Isles). Published, but unconfirmed, records of Colletes daviesanus from Pabbay north to Lewis (Western Isles), and from Coll, Tiree and Rum (Heslop Harrison 1952) almost certainly refer to C. floralis. In England, the bee was collected at Sandscale Haws, Cumbria, by M E Archer on 18 July 1994 (the first English record). The species is very widely distributed on the coast of Ireland, with records from Dublin, Wicklow, Wexford, Waterford, Cork, Kerry, Clare, Galway, Mayo, Sligo, Donegal and Derry. The bee has also been found on the islands of Cape Clear (Cork) and Great Saltee (Wexford). In addition, it is known from some inland sites in Wexford, Kilkenny, Galway and Cavan.