Diagrammatic comparison of fusion of male abdominal sternites VIII-IX in the Hymenoptera, ventral view. Figure 34B redrawn from Peck (1937: fig. 37). A Leptanilla zhg-my04. B Dolichovespula maculata (Linn.). Abbreviations: ASVIII = abdominal sternite VIII; ASIX = abdominal sternite IX; acsS8 = antecosta of abdominal sternite VIII; acsS9 = antecosta of abdominal sternite IX; spc = spiculum; gcx = gonocoxite.