Orthogonius MacLeay, 1825

A genus with four species known for Angola (Ferreira 1965, Insectoid.info 2017). Nevertheless we had collected the same number of species during our entomological trips in Angola, we were not well succeeding to assign the specimens obtained to any known one ( Orthogonius alutaceus Quedenfeldt, 1883, Orthogonius brevilabris H. Kolbe, 1889, Orthogonius clarkei Murray, 1858 and Orthogonius impunctipennis Quedenfeldt, 1883).