Fig. 2 in Contributions to the knowledge of Formicidae (Hymenoptera, Aculeata): a new diagnosis of the family, the first global male-based key to subfamilies, and a treatment of early branching lineages

Fig. 2. Pterothoracic venter morphology of representative hymenopterans. A. Tenthredinidae, female. B. Polistes (Vespidae), worker. C. Paraponera clavata gyne (Paraponerinae, Formicidae). Scale bars = 1.0 mm. Abbreviations: see Material and Methods.