A new species of Eremobothynus Ohaus (Coleoptera: Scarabaeidae: Dynastinae) from Argentina, with notes on Eremobothynus cornutus (Steinheil) Author Grossi, Paschoal Coelho Author Abadie, Esteban Ignácio text Zootaxa 2008 1733 57 60 journal article 10.5281/zenodo.181374 321f0d1f-9203-4f2e-8594-1dc16a9a1149 1175-5326 181374 Notes on Eremobothynus cornutus ( Steinheil, 1872 ) This species was described by Steinheil (1872) based on a single male and was originally placed in the genus Scaptophilus Burmeister, 1847 , which was later synonymized with Bothynus Hope, 1837 . Ohaus (1910) described the genus Eremobothynus to accommodate this species. Ohaus (1910) also described the female of E . cornutus , and mentioned that the three males he studied had a more developed horn than the “female” he examined. It is very probable that he was actually describing a very small male and mistook it for a female. During the course of our studies, we examined a large number of male and female specimens of E . cornutus from the second author’s collection. All females examined were completely unarmed, with no horns or tubercles on the head ( Fig. 4 ). Therefore, all identification keys (e.g., Endrödi 1969 , Endrödi 1985 , Ratcliffe 1981 , Ratcliffe & Hardy 2005 ) must be corrected to indicate that only males in E . cornutus have a frontal horn ( Fig. 3 ), and that the pronotum is convex in females ( Fig. 4 ) and not declivous as in males.