- Onthophagus mariozuninoi Delgado, Navarrete & Blackaller-Bages, 1993

Holotype: ♂. MEXICO: Morelos, Tlayacapan, San José de los Laureles, 1700 m, 8/IX/1990. Col. J. L. Navarrete y G. A. Quiroz; Bosque mesófilo. Dentro de Tricholoma sp. IV.

Conservation status: Complete, well-preserved; genitalia glued on a card. Allotype: ♀. Ídem.

Conservation status: Complete, well-preserved.

Paratypes: 3 ♀, 2 ♂. Ídem. 24/VIII/1 991. En Russula IV.

Conservation status: Complete, well-preserved.