Key to species of the “ Eigenmannia trilineata ” species group • 1a Number of premaxillary teeth 27–40 .............................................................. 2 • 1b Number of premaxillary teeth 8–26 ................................................................ 7 • 2a Number of premaxillary teeth 27 ....................................................................3 • 2b Number of premaxillary teeth 32–40 .............................................................. 4 • 3a Suborbital depth 18 3–14 8% HL ..................................... Eigenmannia besouro • 3b Suborbital depth 30–37 7% HL ................................ Eigenmannia camposi n sp • 4a Number of premaxillary teeth 32 ....................................................................5 • 4b Number of premaxillary teeth 35–40 ................................. Eigenmannia wawai • 5a Number of teeth in dentary 23 ....................................... Eigenmannia trilineata • 5b Number of teeth in dentary 35–60 .................................................................. 6 • 6a Number of teeth in dentary 35–39 .............................. Eigenmannia magoi n sp • 6b Number of teeth in dentary 56–60 ........................ Eigenmannia zenuensis n sp • 7a Number of premaxillary teeth 17–26 .............................................................. 8 • 7b Number of premaxillary teeth 8–16 ................................................................ 9 • 8a Number of teeth in dentary 16–18 .................................. Eigenmannia correntes • 8b Number of teeth in dentary 19–26 ................................................................ 14 • 9a Number of endopterygoid teeth 5–7 ............................................................ 10 • 9b Number of endopterygoid teeth 8–16 ..........................................................11 • 10a Orbital diameter 11 4–15 0 HL ........................................ Eigenmannia loretana • 10b Orbital diameter 15 7–23 9 HL ........................................ Eigenmannia guairaca • 11a Oral width 10 HL 19% HL ............................................................................12 • 11b Oral width 20 HL 25 1% HL ........................................... Eigenmannia antonioi • 12a Suborbital depth 18–28 ...................................................................................13 • 12b Suborbital depth 29 9–40 8 ......................................... Eigenmannia microstoma • 13a Number of premaxillary teeth 8–10 .......................... Eigenmannia muirapinima • 13b Number of premaxillary teeth 13–16 .......................... Eigenmannia pavulagem • 14a First basibranchial ossified ................................................... Eigenmannia sayona • 14b First basibranchial unossified ..........................................................................15 • 15a Precaudal vertebrae 11–12 ............................................. Eigenmannia desantanai • 15b Precaudal vertebrae 13–15 ..............................................................................16 • 16a Precaudal vertebrae 13 ............................................. Eigenmannia matintapereira • 16b Precaudal vertebrae 15 .............................................. Eigenmannia vicentespelaea

Published as part of Herrera-Collazos, Edgar Esteban, Galindo-Cuervo, Aleidy M., Maldonado-Ocampo, Javier A. & Rincón-Sandoval, Melissa, 2020, Three new species of the Eigenmannia trilineata species group (Gymnotiformes: Sternopygidae) from northwestern South America, pp. 1-28 in Neotropical Ichthyology (Cambridge, England) (Cambridge, England) 18 (1) on pages 22-24, DOI: 10.1590/10, http://zenodo.org/record/10960451