Crabro argenteus (SCHENCK,1857); Ceratocolus fasciatus (LEPELETIER & BRULLÉ,1835); Crabro intermedius (MORAWITZ,1866); Crabro kollari (DAHLBOM,1845); Crabro luxuriosus (COSTA,1871); Solenius petiolatus (LEPELETIER & BRULLÉ,1835); Ceratocolus [lapsus] reticulatus (LEPELETIER & BRULLÉ,1835); Crabro vestitus (SMITH,1858)
A medium-sized species of Ectemnius.
Most records are restricted to southern England south of a line connecting the Bristol Channel with the Wash. North of this area, a few recent records exist for Herefordshire and Anglesey whilst older ones are from Lincolnshire, Cheshire and South-west Yorkshire. The overall picture is of a southern thermophilic species, with a rather striking abruptness in its northern limits. It does not show the apparent increase in frequency in northern England exhibited by some other Ectemnius species in recent decades. However, Spooner (unpublished notes) suggests that its frequency within southern England has increased during the course of this century. Recent records exist for the Channel Islands (Jersey), but it is unknown from Ireland. Overseas distribution confined to Europe (but not the far north), and the Caucasus.