- Xyloryctes howdenorum Delgado & Nájera-Rincón, 1992

Holotype: ♂, MEXICO: Jalisco, Ameca, 1260 m, 14/VII/1989. Col. M. Nájera, luz merc., Cultivo de maíz, Selva baja caducifolia.

Conservation status: Complete, well-preserved; genitalia glued on a card. Allotype: ♀, Ídem. 26/VII/1985. Col. F. Pérez, luz negra.

Conservation status: Complete, well-preserved.