I am posting a link to a digital copy of: O.W RICHARDS (1980) SCOLIOIDEA, VESPOIDEA,AND SPHECOIDEA (HYMENOPTERA,ACULEATA) HANDBOOKS FOR THE IDENTIFICATION OF BRITISH INSECTS VOLUME VI, PART 3(B):
http://www.royensoc.co.uk/sites/default ... chards.pdf For anyone who has an interest.