A key to 16 histerid species associated with decaying carcasses in Argentina is presented, including diagnoses and habitus photographs for these species. This article provides a table of all species associated with carcasses, detailing the substrate from which they were collected and geographical distribution by province. All 16 Histeridae species registered are grouped into three subfamilies: Saprininae (twelve species of Euspilotus Lewis and one species of Xerosaprinus Wenzel), Histerinae (one species of Hololepta Paykull and one species of Phelister Marseul) and Dendrophilinae (one species of Carcinops Marseul). Two species are new records for Argentina: Phelister rufinotus Marseuland Carcinops troglodytes (Paykull). A discussion is presented on the potential forensic importance of some species collected on human and pig carcasses.

Taxonomía y sistemática Descripción de un nuevo género y una nueva especie de Saprininae neotropicales (Coleoptera: Histeridae) Description of a new genus and a new species of Neotropical Saprininae (Coleoptera: Histeridae

The Neotropical subgenus Platysaprinus Bickhardt, 1916 of the genus Euspilotus Lewis, 1907 is revised, keyed and figured. Saprinus myrmecophilus Bickhardt, 1910, is newly transferred into genus Euspilotus Lewis, 1907, subgenus Platysaprinus Bickhardt, 1916. Euspilotus (Platysaprinus) carinipennis (Desbordes, 1924), is newly synonymized with Euspilotus (Platysaprinus) myrmecophilus (Bickhardt, 1910) syn. nov., based on examination of the type material. Two new species: Euspilotus (Platysaprinus) ferreri sp. nov. from Brazil (Minas Gerais, Mato Grosso and Rio de Janeiro) and Euspilotus (Platysaprinus) vazdemelloi sp. nov. from Brazil (Mato Grosso) are described. Euspilotus (Platysaprinus) latimanus (Schmidt, 1890) is newly reported from Argentina (Misiones), Paraguay (Amambay) and Bolivia. Lectotypes and paralectotypes of Saprinus latimanus Schmidt, 1890 are designated.

Se propone un nuevo género para Saprinus dolatus Marseul, 1862 (Histeridae, Saprininae), especie descrita del litoral costero de Río Janeiro, Brasil. Se amplía su distribución a otros países de la zona Atlántica costera de Sudamérica, reconociendo su hábitat psamófilo y se proporcionan imágenes de la genitalia de ambos sexos, antena, mandíbulas, mentón, maxila y dibujos de la genitalia masculina.

Se describe un nuevo género y especie de Saprininae de Argentina de hábito psamófilo, Oosaprinus rojaslanusi n. gen., n. sp., del litoral costero patagónico de la provincia de Chubut.