Figure 17-19. Sexual dimorphism and aedeagus images. 17a in Fifteen new species of Sonoma Casey from the eastern United States and a description of the male of Sonoma tolulae (LeConte) (Coleoptera: Staphylinidae: Pselaphinae)

Figure 17-19. Sexual dimorphism and aedeagus images. 17a) Ventral aspect of abdomen, male (redrawn from Park 1942). 17b) Ventral aspect of abdomen, female. 18) Sonoma cygnus, aedeagus (dorsal view). 19) Sonoma parkorum, aedeagus (dorsal view). Scale lines equal 0.1 mm. Right side of Fig. 17-19 is anatomical left.