ephimeros, Attonitus Vari [R. P.] & Ortega [H.] 2000:129, Figs. 1, 4 [Ichthyological Exploration of Freshwaters v. 11 (no. 2); ref. 24436] Río Picha, Puerto Huallana, Quebrada Mapichiriato, 11°50'S, 73°20'W, Río Urubamba basin, Province La Convencion, Depto de Cusco, Peru. Holotype: MUSM 11501. Paratypes: MUSM 12757-60 (5, 8, 3, 1); USNM 349696 (4, 1 c&s), 349708 (8, 2 c&s), 349713 (1), 349914 (3). Plus non-type specimens. •Valid as Attonitus ephimeros Vari & Ortega 2000 -- (Buckup in Reis et al. 2003:113 [ref. 27061], Mirande 2010:538 [ref. 31006], Thomaz et al. 2015:Add. 5 [ref. 33893]). Current status: Valid as Attonitus ephimeros Vari & Ortega 2000. Stevardiidae: Diapominae. Distribution: Aguaytia and Pachitea rivers in Ucayali River basin, Peru. Habitat: freshwater.