Figure 1 in Gonopod segmentation and the Australian centipede Prionopodella (Chilopoda): testing a basal position in the Scutigeromorpha

Figure 1. Cladistic content of Verhoeff's (1925) theory that Prionopodella possesses a plesiomorphic condition of female gonopod division; Prionopodella pectinigera based on syntype figured by Verhoeff (1925, pl. 1, fig. 6). Apomorphies are a progressive reduction in the numbers of articles in the gonopod. Pro., proarthon; mes., mesarthron; met., metarthon.