Excavator: Ground. Bonelli (1954b) and E.T. Nielsen (1934) have reported on the nesting habits of this species in Italy and Denmark respectively; they also describe and figure nests. In Canada nests may be found in great aggregations in a variety of habitats (Knerer & Atwood, 1962), but such prolific congregations do not seem to have been found in Britain. A Canadian nest has been briefly described by Atwood (1933), who also noted that the new brood of gynes does not overwinter in the nesting area. European nest figured by Westrich (1989).
Apparently a solitary species, though confirmation is desirable (Atwood, 1933).