Illustrations of male genitalia S. dux . A: lateral view of genitalia displaying short, broad phallus, slightly curved upward apically of pregonite and postgonite, pointed and curved apically cerci and apically bifurcated juxta. B: Epandrium, cerci and surstyli, posterior. Online figure in color. Bar = 0.1 mm. Terminology followed Giroux et al. .