Onthophagus canescens 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 canescens Zunino & Halffter, 1988 , new rank

Figs. 3–4 , 18–20

Onthophagus fuscus canescens Zunino & Halffter 1988: 83 –85; 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 (1 male, 2 females). Paratypes. 1 male, 1 female: “ México, Parque Nacional J. M. Morelos, Morelia , Michoacán, 25/VII/64, P. Reyes C. col., en hongos” ( GHC) ; 1 female: “ México, Valle de Bravo , Edo. de México, 25/VI/67, col. G. y V. Halffter, cebo excremento humano” ( VMC) .

Non-type material examined. 1 female: “ México, Michoacán, Tejamaniles , 17/VIII/90. A. Morales, col.” ( CEMT) .

Remarks. Length: 9.1 ± 0.1 mm. The following set of characters help us to support the new status of O. canescens ( Table 1): pronotal pubescence medially absent (densely covering the entire surface in O fuscus ); short elytral pubescence (long elytral pubescence in O. fuscus ); major male frontal carina completely impressed (not impressed laterally in O. fuscus ); major male pronotal prominence obtusely trapezoidal (obtusely triangular in O. fuscus ); female frontal carina complete, rounded (not impressed laterally, trapezoidal in O. fuscus ); apical-superior area of the parameres trapezoidal (obtuse in O. fuscus ); apex of the inferior right lobe concave (claw shaped in O. fuscus ). Onthophagus canescens occurs between 1700–2100 m in La Sierra de Mil Cumbres, central-western Trans-Mexican Volcanic Belt ( Fig. 17 ).

Figures

FIGURE 3. Onthophagus canescens male dorsal habitus, paratype.

FIGURE 4. Onthophagus canescens 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).