Figures 16–23 in New species of Stenotothorax Schmidt from the northwestern United States (Coleoptera: Scarabaeidae: Aphodiinae)

Figures 16–23. Stenotothorax protibiae dorsal (top) and ventral (bottom) surfaces. Note abrasions on ventral surfaces. 16, 20) S. ovipennis, lacking secondary dorsal row of setae. 17, 21) S. wintoni, with secondary dorsal row of setae proximal of basal tooth. 18, 22) S. comosus, with coarse setose punctures on ventral surface, female with sparse setae on medial margin. 19, 23) S. winnemucca, with coarse setose punctures on ventral surface, male with denser setae on medial margin. Arrow points to secondary row of setae.