A new genus of Euthyplociinae from Ecuador (Ephemeroptera: Euthyplociidae) Author Gonçalves, Inês C. Universidade Federal do Rio de Janeiro (UFRJ), Instituto de Biologia, Departamento de Zoologia, Laboratório de Entomologia. Programa de pós-graduação em Ciências Biológicas, modalidade Zoologia, UFRJ / Museu Nacional inescg.bio@gmail.com Author Pescador, Manuel L. Entomology, College of Agriculture and food Science, Florida A & M University manuelpescador@gmail.com Author Peters, Janice G. Entomology, College of Agriculture and food Science, Florida A & M University janice.peters@famu.edu text Zootaxa 2020 2020-04-01 4759 1 107 112 journal article 10.11646/zootaxa.4759.1.7 6758be2d-2f80-4f51-8a19-97bd7ee57d47 1175-5334 3756072 urn:lsid:zoobank.org:pub:28D3DFE9-E50F-474B-B780-F736DBC0E771 Dasyplocia aequatorialis sp. nov. Gonçalves, Pescador & Peters Nymph: Length: male (mature, black wing-padded) 25 mm ; female (not mature) 29–31 mm . Specimen coloration fading therefore few color features are described. Dorsolateral margins of head blackish anterior to antennal insertion; eyes black; ocelli faded but probably white with inner margin black; antennae with scape and pedicel same color as head, flagellum lighter ( Figs 1–3 ). Labrum with baso-lateral margins black ( Fig 8 ). Color of abdomen completely faded; gills purplish grey. Penes of mature nymph long, fused on basal 1/3, apparently with an apical non-sclerotized process ( Figs 6–7 ). Etymology: “ aequatorialis “ – referring to country of Ecuador . Material: Ecuador , Zamora-Chinchipe Province , small stream 19 km SE Paquisha , 1,010 km , 21.ix.1990 , Pescador, M.L. leg., Holotype : 1 female nymph ( NMNH ); paratypes : 1 mature male nymph (wings dissected, two slides) and 1 female nymph (mouthparts dissected and illustrated ( FAMU ).