title: Oligoneuria (Yawari) anatina sp. nov. (Ephemeroptera: Oligoneuriidae) from the extreme north of Brazil.
abstract: Oligoneuria (Yawari) anatina sp. nov. is described and illustrated based on nymphs and imagoes collected in the municipality of Serra do Navio, state of Amapá, Brazil. The main characteristics that can be used to distinguish the new species from other species of the genus are, in imagoes: 1) forewing with spectral cross veins between IRS and MP2 (male) or between IRS and IMP (female), 2) posterior margin of styliger plate distally rounded and with paired rounded projections; in nymphs: 1) vertex of head with two pairs of tubercles, 2) lateral margin of anterior projection of head straight. Cytochrome Oxidase subunit I (COI) sequences were used to associate male imago and immature stages of the new species.
authors.affiliation: Programa de Pós-graduação em Biologia Animal, Laboratório de Sistemática e Ecologia de Insetos, Universidade Federal do Espírito Santo, Rodovia BR-101 Norte, Km 60, Bairro Litorâneo, 29932-540, São Mateus-ES, Brazil.; Email: fcmassariol@gmail.com.
authors.forename: Fabiana Criste
authors.initials: FC
authors.lastname: Massariol
authors.affiliation: Instituto Federal de Educação, Ciência e Tecnologia do Amazonas (IFAM), Av. 22 de Novembro, Vila Falcão, 69.830-000, Lábrea- AM, Brazil.; Email: pvilelacruz@gmail.com.
authors.forename: Paulo Vilela
authors.initials: PV
authors.lastname: Cruz
mesh_terms: D063147:Animal Distribution; D000825:Animal Structures / Q000033:anatomy & histology / Q000254:growth & development; D000818:Animals; D049628:Body Size; D001938:Brazil; D017753:Ecosystem; D065133:Ephemeroptera / Q000033:anatomy & histology / Q000145:classification* / Q000235:genetics / Q000254:growth & development; D019143:Evolution, Molecular; D005260:Female; D008297:Male; D009929:Organ Size; D012689:Sequence Homology, Nucleic Acid