Fig. 25 in A reassessment of the Neotropical genus Pseudonannolene Silvestri, 1895: cladistic analysis, biogeography, and taxonomic review (Spirostreptida: Pseudonannolenidae)

Fig. 25. SEM images of sternum. A. Pseudonannolene paulista Brölemann, 1902 (IBSP 1908). B. P. caatinga Iniesta & Ferreira, 2014 (IBSP 2180). C. Spiracle on the posterior sternum of P. paulista (IBSP 1908). D. Spiracle on the posterior sternum of P. caatinga (IBSP 2180). E. Spiracle on the anterior sternum of P. paulista (IBSP 1908). F. Spiracle on the anterior sternum of P. caatinga (IBSP 2180). Scale bars: A = 0.25 mm; B = 0.5 mm; C, E = 0.05 mm; D = 0.1 mm; F = 0.2 mm.