Terminology and measurements used in this paper 1 wing venation: pa = parastigma, pt = pterostigma, 1 = marginal cell, 2a, b, c = 1st, 2nd and 3rd submarginal cell, respectively, 3a, b = 1st and 2nd discal cell, respectively, 4a = 1st subdiscal cell, 5 = basal cell, 6 = subbasal cell 2 head, dorsal aspect: a = length of eye, b = length of temple 3 head, lateral aspect: c = width of temple, d = width of eye, e = height of eye, f = width of malar space (measured as actual true distance in its own plane) 4 head, anterior aspect: g = width of face, h = width of hypoclypeal depression 5 fore femur, lateral aspect: i = length, j = width 6 1st metasomal tergite, dorsal aspect: k = length of tergite (measured from adductor), l = apical width of tergite.