Subfamily Mastinocerinae LeConte, 1881

Cenophengus longicollis Wittmer, 1976 . Source: Zaragoza-Caballero & Pérez-Hernández 2014a Distremocephalus leonilae Zaragoza, 1986 . Source: Zaragoza-Caballero & Pérez-Hernández 2014a Distremocephalus mexicanus (Wittmer, 1963) . Source: Zaragoza-Caballero & Pérez-Hernández 2014a Distremocephalus opaculus (Horn, 1895) . Source: Zaragoza-Caballero & Pérez-Hernández 2014a Mastinowittmerus mexicanus Zaragoza, 1984 . Source: Zaragoza-Caballero & Pérez-Hernández 2014a