Onthophagus gazellinus Bates 1887

Onthophagus gazellinus species group. This group is diagnosed by the male having no head horns (Figs. 5.7–8); male protibial apex with a tuft of long setae resembling a fine-pointed paintbrush (Figs. 1.57 –58); pronotum with four transversely aligned tubercles along a straight carina (Figs. 5.7–8), base unrimmed; metafemur light brown with fine punctures (Figs. 2.57 –58); at the excavated posterior pronotal margin a line of 5–6 large, ocellate punctures with one short, stiff, upward pointing seta, punctures disappearing towards middle of the pronotal margin; apex of elytra and pygidium with long, erect setae. Boucomont (1932) initially established this species group as his “10 e Groupe” and was supported by Kohlmann & Solís (2001) under the name of O. gazellinus species group. This group contains, at present, only two species, O. gazellinus Bates and O. onthochromus Arrow (Table 7). Boucomont (1932) defined the group as having large species with long erect setae at the end of the elytra and on the pygidium; male head unarmed and female with two carinae; thorax base not rimmed; coloration light, elytral points brown. This species group is distributed from Nicaragua to Brazil.