Onthophagus mycetorum Zunino & Halffter, 1988

Joaqui, Tatiana, Moctezuma, Victor, Sánchez-Huerta, José Luis & Escobar, Federico, 2019, The Onthophagus fuscus (Coleoptera: Scarabaeidae) species complex: an update and the description of a new species, Zootaxa 4555 (2), pp. 151-186 : 160

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 ).

Figures

FIGURE 5. Onthophagus mycetorum male dorsal habitus, holotype.

FIGURE 6. Onthophagus mycetorum female dorsal habitus, paratype.

FIGURE 17. Onthophagus fuscus species group distribution. Species distributions were determined according to specimen labels and specialized literature (Bates 1886–1890; Zunino & Halffter 1988; Delgado & Capistan 1996; Navarrete-Heredia et al. 2001; Zunino 2003; Moctezuma et al. 2016).

FIGURE 18. Aedeagus: A, Onthophagus fuscus; B, O. canescens; C, O. mycetorum; D, O. parafuscus; E, O. pseudofuscus. Redrawn from Zunino & Halffter (1988).

FIGURE 19. Lamella copulatrix: A, O. fuscus; B, O. canescens; C, O. mycetorum; D, O. parafuscus; E, O. pseudofuscus. Redrawn from Zunino & Halffter (1988).

FIGURE 20. Female genitalia: A, O. fuscus; B, O. canescens; C, O. mycetorum; D, O. parafuscus. Redrawn from Zunino & Halffter (1988).