RESUMO: Hypotelus monnei Paiva & Caron sp. nov., is a new species of minute rove beetles (Coleoptera: Staphylinidae, Piestinae) described from Brazil. We have also added the new species to the dichotomous key of Hypotelus Erichson, 1839 and verified the monophyly of the genus, now including the new species. Hypotelus monnei sp. nov. is similar to H. corniculatus Bortoluzzi & Caron, 2017, but differs by having the head distinctly darker than the pronotum, frontal processes one-fourth to one-third the length of the antennal scape, antenna shorter than that of H. corniculatus with antennomere IV subquadrate, and sternite VIII with sinuous posterior margin. The new species shares morphological characters with four species that comprise a clade previously referred to as Clade C. Until now, the species of this clade were distributed from Costa Rica to Brazil and concentrated in tropical rainforests. The new species represents the southernmost and easternmost distribution of Clade C, and is the first species of this clade to occur in Brazil. With this addition, Brazil now records three species of Hypotelus.
doi: https://doi.org/10.11606/1807-0205/2026.66.special-issue-1.024