Descrizione originale:
- Schönhuth, Susana & I. Doadrio, O. Domínguez-Domíngez, D.M. Hillis, R.L. Mayden. 2008. "Molecular evolution of southern North American Cyprinidae (Actinopterygii), with the description of the new genus Tampichthys from central Mexico". Molecular Phylogenetics and Evolution. (47):729-756. DOI: 10.1016/j.ympev.2007.11.036 (ffm00124) (riassunto)
Type species: Notropis rasconis Jordan & Snyder, 1899 (original designation).
Elenco delle specie descritte (6):
valid: 6- Notropis rasconis Jordan & Snyder, 1899 (valid)
- Notropis ipni Alvarez & Navarro, 1953 (valid)
- Dionda erimyzonops Hubbs & Miller, 1974 (valid)
- Dionda catostomops Hubbs & Miller, 1977 (valid)
- Dionda dichroma Hubbs & Miller, 1977 (valid)
- Dionda mandibularis Contreras-Balderas & Verduzco-Martínez, 1977 (valid)