Plectrochilus machadoi Miranda Ribeiro, 1917
| The Pygidiidae, a family of South American catfishes C H Eigenmann (1918) Memoirs of the Carnegie Museum 7: 259-398 | |
| The fishes of the BeniMamoré and Paraguay basins, and a discussion of the origin of the Paraguayan fauna Nathan E Pearson (1937) Proceedings of the California Academy of Sciences 23: 99-114 | |
| The fishes of the Beni-Mamoré and Paraguay basins, and a discussion of the origin of the paraguayan fauna (1937) Proc. California Acad. Sci. 23(8): 99-114 | |
| Catalogue of type specimens of recent fishes in Field Museum of Natural History Myriam Ibarra and Donald J Stewart (1987) Fieldiana Zoology (N. S.) 35: 1-112 |