Brazilian Atlantic rainforest endangered biodiversity: a new species of the Dichotomius sericeus (Harold, 1867) species group (Coleoptera: Scarabaeidae: Scarabaeinae).

Dichotomius valoisae new species (Coleoptera: Scarabaeidae: Scarabaeinae: Dichotomiini) from Santa Luzia do Itanhi, Sergipe, Brazil, is described based on external differences from its congeners. Diagnostic characters and a brief discussion about its conservation status are provided, as well as an updated identification key to the Dichotomius sericeus (Harold) species group.