Myrmica schencki was added to the British list by Donisthorpe (1915) from Welsh specimens initially thought to be M. lobicornis. Workers and queens of both of these species have the antennal scape sharply angled at the base, with this bend bearing a broad upright flange. However, in M. schencki this flange is more strongly developed, with the width across the frontal lobes consequently smaller (e.g. Seifert 1998; Bolton 2005; Pontin 2005).
In Britain, records are restricted to southern England and south Wales, and north to south Lincolnshire. Myrmica schencki also occurs in southern Ireland. A transpalaearctic species, its European range extends as far north as southern Norway, Sweden and Finland, and from Spain to Italy in the south. In Asia it extends to North Korea in the east, with its southern limit crossing the Tien Shan and central Kazakhstan (Czechowski, Radchenko & Czechowska 2002).