A review of the Neotropical dung beetle genera Deltorhinum Harold, 1869, and Lobidion gen. nov. (Coleoptera: Scarabaeidae: Scarabaeinae) Author Génier, François text Zootaxa 2010 2693 35 48 journal article 10.5281/zenodo.199593 876fdefe-ec44-4495-9003-f6d32d5f989e 1175-5326 199593 Deltorhinum Harold, 1867 Harold 1867 : 96 [original description] Harold 1869 : 1003 [catalogue] Gillet 1911 : 54 [catalogue] Luederwaldt 1931 : 366 [identification key to genus] Paulian 1938 : 234 [identification key to genus] Blackwelder 1944 : 205 [checklist] Vulcano & Pereira 1967 : 533–603 [identification key to genus] Vaz-de-Mello 2000: 192 [checklist] Medina et al. 2001 : 134 [checklist] Vaz-de-Mello 2008: 12 [systematic position] Almeida & Mise 2009 : 237 [mention] Redescription. Small to moderate in size (6.5–14.0 mm). Body oval to elongate-oval. Color light brown in teneral specimens to black, with distinct metallic sheen only in D. robustum . Clypeus regularly tapering toward apex, which is moderately to strongly upturned; apex at most broadly emarginate, never with two distinct teeth. Clypeofrontal suture always distinctly carinate. Pronotal anterior portion modified, produced into a single broad or two narrow lobate projections and additional modifications; simple only in D. robustum , which has a somewhat triangular impression on each side of midline. Pronotal disc with a deep and well defined longitudinal sulcus along most of midline. Elytra strongly convex, with 7 striae on disc, stria 8 distinct from stria 9 only at apex. Elytral pseudepiplera concealed in dorsal view. Pygidium narrowly sulcate basally, sulcus broadly arcuate or slightly bisinuous in distal view. Protibia obliquely truncate anteriorly; protarsi atrophied and usually broken off in non teneral individuals. Mesotibiae and metatibiae very wide at apex in ventral view; tarsi reduced in length, first tarsomere at most 1.5 X longer than wide at apex, usually as wide at apex as long. Sternite 8 unmodified medially. Aedeagus unmodified, parameres simply tapering toward apex, lacking denticles, hooks or rough surface. Internal sac with variously shaped sclerites, usually with a large apical sclerite seemingly forming a guide for the flagellum.