Figure 21 in From Arge to Zenarge: adult morphology and phylogenetics of argid sawflies (Hymenoptera: Argidae)

Figure 21. Volsella characters and states ♂, each couple with overview (left) and detail of digiceps apex (right). A–B, Eriglenum crudum. C–D, Ptilia brasiliensis. E–F, Sericoceros gibbus. G–H, Zynzus nigropectus. I, Neoptilia biramosa. J, Adurgoa gonagra. K–L, Triptenus humeratus. Abbreviations: bvoll = basivolsella, dgc = digiceps, dgr = digiura, dvoll = distivolsella.