The Onthophagus anthracinus species complex

We establish the O. anthracinus species complex as having the following characteristics: anterior edge of pronotal punctures lacking tubercles; pygidial punctures very shallow, at least in basal half, sometimes deep and distinct if apical half of pygidium is shiny; male with pronotal protuberance; female with protuberance usually feebly indicated; pronotal punctures not crowded, separated by at least one diameter, anterior edge of pronotal punctures lacking any small shiny tubercle; surface dull, alutaceous, brown or black; length less than 7.5 mm.