An identification guide for the Aphodiinae of Brazil is provided. Aphodiinae are a subfamily of Scarabaeidae comprising small and saprophagous beetles normally recognizable by the elongated body, clypeus covering the mouth parts and metatibiae with two apical spurs. In Brazil, the subfamily is composed of 40 genera and 148 species. Through the analysis of material in collections and literature, an identification guide for the subfamily in Brazil was written. Dichotomous keys for all genera and species are provided. Three genera (Amerilochus Skelley, 2007, Saprolochus Stebnicka Galante, 2007 and Stebnickiella Skelley, 2007) and 15 species (Blackburneus surinamensis Dellacasa, Dellacasa Gordon, 2011, Blackburneus thomasi Dellacasa, Dellacasa Gordon, 2011, Labarrus lividus (Olivier, 1789), Aidophus kolbei (Schmidt, 1911), Ataeniopsis haroldi (Steinheil Stroblel, 1872), Batesiana chamorroi Skelley Vaz-de-Mello, 2022, Iarupea lopeteguii Martínez, 1953, Lomanoxia canthonopsis Skelley Howden, 2003, Lomanoxoides bitubericollis (Schmidt, 1909), Odontolytes guayara (Stebnicka, 2002), Odontolytes loretoensis (Stebnicka, 2002), Tanyana guyanaensis (Stebnicka, 2003), Amerilochus cinereus Skelley, 2007, Saprolochus tridentatus Skelley, 2007, Stebnickiella zosterixys Skelley, 2007) are considered new records for the country. Ataenius bolivarensis Stebnicka, 2007 and Cartwrightia cartwrighti Cartwright, 1967 are tentatively considered as new records. Ataenius Harold, 1867 is treated at species group level only. Platytomus longulus (Cartwright, 1948) and Platytomus freudei (Balthasar, 1960) are treated as a species complexes. The known distributions of many species are updated.
Gama et al. (Mon,) studied this question.