title: Spelaeogammarus titan, a new troglobitic amphipod from Brazil (Amphipoda: Bogidielloidea: Artesiidae).
abstract: A new troglobitic species of the amphipod family Artesiidae Holsinger, 1980 is described from a cave in the municipality of Santa Maria da Vitória, in the Brazilian state of Bahia, northeastern Brazil. Spelaeogammarus titan sp. nov. differs from the others in the genus by its body length, rising up to 18.3 mm, the antenna 1 with accessory flagellum 6-articulate, propodus of the first gnathopod 1.8 X longer than basis, the largest in the genus, coxa 5 with posterior lobe slightly concave, inner ramus of pleopods with 10 to 13 setae, outer ramus of uropod 3 with 22 simple setae, and telson with 1 apical plus 3 subapical stout setae in each lobe. With this study, the knowledge of Spelaeogammarus is improved to 5 species, all of them exclusive to caves in the northeastern Brazilian state of Bahia. A comparative table with the diagnostic characters of the species of Spelaeogammarus is provided.
authors.affiliation: Universidade Federal da Bahia (UFBA), Instituto de Biologia, Laboratório de Invertebrados Marinhos, Crustacea, Cnidaria & Fauna Associada (LABIMAR). Rua Barão de Jeremoabo, 147, Ondina, Salvador, BA, CEP 40170-290, Brasil.; Email: senna.carcinologia@gmail.com.
authors.forename: André R
authors.initials: AR
authors.lastname: Senna
authors.affiliation: Universidade Federal Rural do Rio de Janeiro, Programa de Pós-graduação em Biologia Animal. Decanato de Pesquisa e Pós-Graduação, UFRRJ, Rod. BR 465, Km 7, Seropédica, RJ, CEP 23890-000, Brasil.; Email: lzflp.andrade@hotmail.com.
authors.forename: Luiz F
authors.initials: LF
authors.lastname: Andrade
authors.affiliation: Centro Universitário de Volta Redonda (UniFOA), Curso de Ciências Biológicas. Av. Paulo Erlei Alves Abrantes, 1.325, Prédio 1, Três Poços, Volta Redonda, RJ, CEP 27240-560, Brasil.; Email: lucas.cbranco@hotmail.com.
authors.forename: Lucas P
authors.initials: LP
authors.lastname: Castelo-Branco
authors.affiliation: Universidade Federal de Lavras (UFLA), Centro de Estudos em Biologia Subterrânea, Departamento de Biologia. Lavras, MG, Brasil.; Email: drops@dbi.ufla.br.
authors.forename: Rodrigo L
authors.initials: RL
authors.lastname: Ferreira
mesh_terms: D033304:Amphipoda / Q000033:anatomy & histology* / Q000145:classification* / Q000502:physiology; D063147:Animal Distribution; D000818:Animals; D001938:Brazil; D005260:Female; D013045:Species Specificity