title: Two new species of Ulmeritoides Traver (Ephemeroptera: Leptophlebiidae) from Southeastern Brazil.
abstract: Two new species of Ulmeritoides Traver, 1959 are described from Southeastern Brazil based on male and female imagos. Ulmeritoides angelus sp. nov. (Holotype male deposited in DZRJ: Minas Gerais State) differs from all other species of the genus by the following combination of characters: forewings hyaline, base dark brown and purplish; veins R1 light brown; dark brown spots on bullae of veins Sc and R2; apex of penis lobes somewhat rounded, each with one central spine. Ulmeritoides tamoio sp. nov. (Holotype male deposited in DZRJ: São Paulo State) differs from all other species of the genus by the following combination of characters: wings hyaline; veins C, Sc and R1 brownish; brownish spots on bullae of veins Sc and R2; apex of penis lobes straight, ending in rather acute apical and mesal projections. An updated key to the genera Ulmeritoides Traver, 1956 and Ulmeritus Traver, 1956 is also given.
authors.affiliation: Universidade Federal do Rio de Janeiro (UFRJ), Instituto de Biologia, Departamento de Zoologia, Laboratório de Entomologia, Caixa Postal 68044, Cidade Universitária, 21941-971, Rio de Janeiro, RJ, Brazil. Programa de Pós-graduação em Ciências Biológicas (Biologia Animal), Universidade Federal do Espírito Santo (UFES), Brazil.; Email: unknown.
authors.forename: Paula Malaquias
authors.initials: PM
authors.lastname: Souto
authors.affiliation: Universidade Federal do Estado do Rio de Janeiro, Instituto de Biociências, Departamento de Zoologia, Laboratório de Insetos Aquáticos, 22290-240, Rio de Janeiro, RJ, Brazil.; Email: unknown.
authors.forename: Elidiomar Ribeirova
authors.initials: ER
authors.lastname: Da-Sil
authors.affiliation: Universidade Federal do Rio de Janeiro (UFRJ), Instituto de Biologia, Departamento de Zoologia, Laboratório de Entomologia, Caixa Postal 68044, Cidade Universitária, 21941-971, Rio de Janeiro, RJ, Brazil.; Email: unknown.
authors.forename: Jorge Luiz
authors.initials: JL
authors.lastname: Nessimian
authors.affiliation: Universidade Federal do Rio de Janeiro (UFRJ), Instituto de Biologia, Departamento de Zoologia, Laboratório de Entomologia, Caixa Postal 68044, Cidade Universitária, 21941-971, Rio de Janeiro, RJ, Brazil.; Email: unknown.
authors.forename: Inês Corrêa
authors.initials: IC
authors.lastname: Gonçalves
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* / Q000254:growth & development; D005260:Female; D008297:Male; D009929:Organ Size; D014921:Wings, Animal / Q000033:anatomy & histology / Q000254:growth & development