Terminology and measurements used in this paper. 1 wing venation: pa = parastigma, pt = pterostigma, 1 = marginal cell, 2a, b, c = first, second and third submarginal cell, respectively, 3a, b = first and second discal cell, respectively, 4a = first subdiscal cell, 5 = basal cell, 6 = subbasal cell 2 head dorsal: a = length of eye, b = length of temple 3 head lateral: 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: g = width of face, h = width of hypoclypeal depression 5 fore femur lateral: i = length, j = width 6 first metasomal tergite dorsal: k = length of tergite (measured from adductor), l = apical width of tergite.