title: New brachypterous species of Dichotomius (Selenocopris) Burmeister (Coleoptera: Scarabaeidae: Scarabaeinae) with the definition of species groups and taxonomic notes in the subgenus.
abstract: Five species groups of Dichotomius (Selenocopris) are defined and separated in an illustrated key in the first effective attempt of systematization of the subgenus. Four new brachypterous species of Selenocopris are described and the also brachypterous Dichotomius ingens (Luederwaldt) is redescribed. These species are diagnosed, illustrated and assigned to the quadraticeps species group. Taxonomic issues on the subgenus are discussed.
authors.affiliation: Universidade Federal de Mato Grosso, Instituto de Biociências, Programa de Pós Graduação em Ecologia e Conservação da Biodiversidade. Av. Fernando Correa da Costa, 2367. Boa Esperança. Cuiabá MT 78060-900, Brazil.; Email: rafavnunes@gmail.com.
authors.forename: Rafael V
authors.initials: RV
authors.lastname: Nunes
authors.affiliation: Universidade Federal de Mato Grosso, Instituto de Biociências, Departamento de Biologia e Zoologia. Av. Fernando Correa da Costa, 2367. Boa Esperança. Cuiabá MT 78060-900, Brasil Fellow of the Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq).; Email: vazdemello@gmail.com.
authors.forename: Fernando Z
authors.initials: FZ
authors.lastname: Vaz-de-Mello
mesh_terms: D063147:Animal Distribution; D000825:Animal Structures / Q000033:anatomy & histology / Q000254:growth & development; D000818:Animals; D049628:Body Size; D001517:Coleoptera / Q000033:anatomy & histology / Q000145:classification* / Q000254:growth & development; D017753:Ecosystem; D005260:Female; D008297:Male; D009929:Organ Size