Leptophlebiidae Banks, 1900 (Insecta, Ephemeroptera) from Maranhão state, Brazil Author Nascimento, Stênio Raniery de Sousa Author Lima, Lucas Ramos Costa Author de Azevêdo, Carlos Augusto Silva text Check List 2020 2020-05-19 16 3 579 591 http://dx.doi.org/10.15560/16.3.579 journal article 10.15560/16.3.579 1809-127X Traverella maranhensis Nascimento , Lima & Azevêdo, 2019 Figures 27 , 46 Traverella maranhensis Nascimento et al. 2019: 196 . Diagnosis. Male Imago: 1) vein ICu1 of forewings free basally; 2) subgenital plate forming two broad, lateral projections with two narrow, long, dorsally recurved spines ( Fig. 46 ); 3) penis lobe divided on distal ¾ ( Fig. 46 ); 4) penis lobe triangular and apically rounded, with a long, ventral spine both slightly curved and directed to midline ( Fig. 46 ). Adapted from Nascimento et al. (2019b) .