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Two new Podischnus Burmeister, 1847 species are described here: Podischnus limeirai sp. nov. from Gurupi region, Maranhão state, Brazil, the easternmost distribution of the genus; and Podischnus cleidecostae sp. nov. from the Acre state, Western of Brazilian Amazon Forest. New diagnostic characters are illustrated and discussed for the genus. An illustrated identification key for all Podischnus species, and an up-to-date distribution map for the Brazilian species of Podischnus are provided. Moreover, we propose the inclusion of P. limeirai sp. nov. in the Red List of Threatened Species (IUCN) due to the fast loss of the Oriental Amazon Forest remnant fragment in that region.

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The Bothynus entellus (LePeletier & Serville) (Coleoptera: Scarabaeidae: Dynastinae: Pentodontini) species group is reviewed with redescriptions, diagnoses, illustrations, and separate identification keys to males and females. Distribution maps for all species in this species group are presented for the first time. Furthermore, two new species, Bothynus araya Duarte & Grossi new species and Bothynus condacki Duarte & Grossi new species, are described.

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Gibboryctes Endrödi, 1974 (Coleoptera: Scarabaeidae: Dynastinae: Oryctini) is an uncommon Neotropical genus comprising five valid species (Gasca-Álvarez & Ratcliffe 2011; Dupuis 2019). Endrödi (1974) established the genus based on Gibboryctes szelenyii Endrödi, 1974 and defined it by the absence of sexual dimorphism; short, triangular, and pointed clypeus; bidentate mandibles projected beyond the anterior clypeal margin; and protibiae quadridentate. After that, Gibboryctes waldenfelsi (Endrödi, 1977) and Gibboryctes gracilicornis (Prell, 1912) were assigned to Gibboryctes, from Strategus Kirby, 1828 and Heterogomphus Burmeister, 1847, respectively (Ratcliffe & Dechambre 1983; Dupuis & Dechambre 2008). Gibboryctes bollei Dechambre, 2006 and Gibboryctes impunctatus Dupuis, 2019 were subsequently described.

No abstract

The Bothynus villiersi species group (Coleoptera: Scarabaeidae: Dynastinae: Pentodontini) is revised and is composed of five South American species: Bothynus villiersi Endrödi, 1968; Bothynus horridus Endrödi, 1968; Bothynus alvarengai Martínez, 1983; Bothynus spinophallicus (Ratcliffe & Cave, 2021) new combination; and Bothynus belemensis new species. Redescriptions, illustrations, new diagnostic characters, identification key, and a first known geographical distribution map for the group are presented.