Reassessment of Leucothyreus noctivagus Ohaus, 1917 reveals Mimogeniates margaridae Martínez, 1964 as new generic and specific synonym (Scarabaeidae, Rutelinae, Geniatini)

In this paper, Mimogeniates margaridae Martínez (Scarabaeidae, Rutelinae, Geniatini) is synonymized with Leucothyreus noctivagus Ohaus (syn. nov.). Hence, the monotypic genus Mimogeniates Martínez is a new junior synonym of Leucothyreus MacLeay (syn. nov.). Leucothyreus noctivagus is redescribed and illustrated based on the type and additional material, including new distributional records in southern Brazil. As a result of our work, the tribe Geniatini now includes 12 genera.