Onthophagus mycetorum Zunino & Halffter, 1988, new rank

Figs. 5–6, 18–20

Onthophagus fuscus mycetorum Zunino & Halffter 1988: 80 – 82; Delgado 1997: 42; Navarrete-Heredia & Galindo 1997: 3; Anduaga 2000: 130; Krajcik 2006: 106; Pulido-Herrera & Zunino 2007: 103; Moctezuma et al. 2016: 33, 35–36

Type material examined (2 males, 14 females). Holotype male: “ México, Bosencheve, Edo. de México, 1/VII/67, col. G. y V. Halffter, en hongos ” (GHC). Paratypes. 9 females: same data as holotype (CEMT: 1 female; GHC: 6 females; VMC: 2 females); 1 male, 5 females: “ México, Bosencheve, Edo. de México, 1/VII/67, col. Edmonds & Reyes, en hongos” (CEMT: 1 male; GHC: 5 females) .

Non-type material examined. 1 male: “ México, Estado de México, km 11 carr. Mexicapan-Ocuilán de Arteaga. 3/VIII/1996. Alt. 2300 m, bosque de pino-encino, exc. de perro. L. Delgado, col.” (CEMT) .

Remarks. Length: 8.3 ± 0.5 mm. The following set of characters support the new status of O. mycetorum (Table 1): pronotal and elytral pubescence relatively sparse (more crowded pubescence covering the entire surface in O. fuscus); carina not present in major male clypeus (weakly developed in O. fuscus); apex of the major male pronotal prominence blunt (acute in O. fuscus); female clypeus apically elongate (obtusely trapezoidal in O. fuscus); female lacking clypeal carina (well developed in O. fuscus); apical-superior area of the parameres right angled, laterally rounded (obtuse in O. fuscus); apical teeth of the parameres right angled (acute in O. fuscus); apex of the superior right lobe oval (claw shaped in O. fuscus). This is the smallest species within the O. fuscus complex. Onthophagus mycetorum occurs between 2000–2700 m in La Sierra de Temascaltepec, La Sierra de Tenango, and El Nevado de Toluca; Central-eastern Trans-Mexican Volcanic Belt (Fig. 17).