title: A new species of Tricorythodes Ulmer (Ephemeroptera: Leptohyphidae) from Minas Gerais, Southeastern Brazil.
abstract: Tricorythodes molinerii sp. n. is described and illustrated based on nymphs from southeastern Brazil. The new species can be distinguished from other species of Tricorythodes Ulmer by the following characters: 1) genal projection present; 2) maxillary palp bi-segmented, with short apical seta; 3) pronotum with well developed anterolateral projection; 4) dorsum of fore femora with a transverse row of setae; 5) tarsal claws without marginal denticles and with one submarginal denticle on each side; 6) operculate gills triangular, shaded with black, and with whitish mark in subbasal zone; and 7) very large size.
authors.affiliation: Museu de Entomologia, Depto. Biologia Animal, Univ. Federal de Viçosa, 36571-000 Viçosa, MG. lucimar.dias@gmail.com
authors.forename: Lucimar G
authors.initials: LG
authors.lastname: Dias
authors.forename: Frederico F
authors.initials: FF
authors.lastname: Salles
mesh_terms: D000818:Animals; D001938:Brazil; D005260:Female; D007313:Insecta / Q000033:anatomy & histology* / Q000145:classification*; D009758:Nymph