Figure 6 in Taxonomic synthesis of the eastern North American millipede genus Pseudopolydesmus (Diplopoda: Polydesmida: Polydesmidae), utilizing high-detail ultraviolet fluorescence imaging

Figure 6. The characteristic prefemoral bulge in males of Pseudopolydesmus, and comparison of walking legs in Pseudopolydesmus and Polydesmus (scanning electron micrograph). A, adult male Pseudopolydesmus erasus, left leg 9, with characteristically large prefemoral bulge and thickened femur (FMNH INS3120685). B, adult female Ps. erasus, right leg 12, without prefemoral bulge (FMNH INS3120685). C, adult male Polydesmus inconstans, right leg 14, with slight prefemoral bulge and thickened femur (FMNH INS4265).