Figures 15–23. Pronotal and prosternal characteristic of Stenaspis verticalis: 15–17) S. verticalis, male, Jalisco, MEX with sides of pronotum rounded. 15) Disc coarsely punctate with 5 vague calli (red arrows). 16: 16a) Proepisternum inflated and finely punctate (dark reddish area). 16: 16b) Demarcation of proepisternal finely punctate area from coarsely punctate dorsum of disc. 17: 17a) Subrectangular impressed area. 17: 17b) Vague demarcation dividing proepisternum from the subrectangular impressed area. 18, 20) S. verticalis, male, Nuevo Leon, MEX with side of pronotum with distinct lateral tubercles. 19) S. verticalis, male, Puebla, MEX with proepisternum inflated and finely punctate clearly demarcated from dorsum. 21–22) S. verticalis, female, Guerrero, MEX with side of pronotum distinctly tuberculate. 21: 21a) Anterior angles obtusely tuberculate. 22) Pronotal disc and proepisternum coarsely punctate. 23) S. verticalis, female, Jalisco, MEX with prosternum coarsely punctate.