Dicotyles tajacu (Linnaeus, 1758)

Álvarez-Córdova, Fernando & Fernández, Jesús A., 2021, Medium-sized and large mammals of the pine-oak forests and grasslands of the Rancho Experimental Teseachi in Chihuahua, Mexico, Check List 17 (2), pp. 669-681 : 679

Dicotyles tajacu (Linnaeus, 1758)

Collared Peccary

Figure 3G

Material examined. MEXICO – Chihuahua • 13; Municipality of Namiquipa ; 28°46′32″N, 107°27′33″W; el- evation 2,191 m a.s.l.; 18 June, 3 October 2018; obs. F. Álvarez-Córdova • 5; Municipality of Namiquipa ; 28°46′42″N, 107°27′45″W; elevation 2,170 m a.s.l.; 28 September 2018; obs. F. Álvarez-Córdova • 13; Municipality of Namiquipa ; 28°47′18″N, 107°28′36″W; eleva- tion 2,121 m a.s.l.; 29 September, 10 October 2018; obs. F. Álvarez-Córdova • 12; Municipality of Namiquipa ; 28°47′49″N, 107°29′02″W; elevation 2,107 m a.s.l.; 16 October 2019; obs. F. Álvarez-Córdova • 22; Municipality of Namiquipa ; 28°52’49”N, 107°27’08″W; elevation 1,876 m a.s.l.; 20 October 2018; 30 March 2019; obs. F. Álvarez-Córdova; UACH-CF-8186-8250 .

Identification. This is the only species of peccary in Chihuahua. It has a pig-like appearance but can be distinguished from European Boar (Sus scrofa Linnaeus, 1758) by its small size. It has a coarse fur and a conspicuous white collar around the neck, and the rest of the body is dark gray ( Schmidly and Bradley 2016).

Distribution. Southwestern USA, most of Mexico (but not in Baja California and the dry Mexican Plateau), through most of South America ( Schmidly and Bradley 2016). Recorded habitats in Chihuahua are quebra- das and sierras.

Remarks. This is the only wild pig in this part of the state. In the northeastern parts of Chihuahua, it occurs in sympatry with the exotic European Boar.

Odocoileus virginianus (Zimmermann, 1780) White-tailed Deer

Figure 3H

Material examined. MEXICO – Chihuahua • 7; Municipality of Namiquipa ; 28°46′32″N, 107°27′33″W ;

elevation 2,191 m a.s.l.; 17 August 2018; obs. F. Álvarez- Córdova • 21; Municipality of Namiquipa; 28°47′18″N, 107°28′36″W; elevation 2,121 m a.s.l.; 28 Septem- ber 2018; obs. F. Álvarez-Córdova • 3; Municipality of Namiquipa; 28°47′30″N, 107°28′49″W; elevation 2,124 m a.s.l.; 30 September 2018; obs. F. Álvarez-Córdova • 26; Municipality of Namiquipa; 28°27′39″N, 107°29′01″W; elevation 2,110 m a.s.l.; 22 October 2018, 12 October 2019; obs. F. Álvarez-Córdova • 36; Municipality of Namiquipa; 28°47′49″N, 107°29′02″W; elevation 2,107 m a.s.l.; 8 October 2018, 8, 13 January 2019; obs. F. Álvarez-Córdova • 59; Municipality of Namiquipa; 28° 52′49″N, 107°27′08″W; elevation 1,876 m a.s.l.; 1 Octo- ber 2018; 5–7 October 2019; obs. F. Álvarez-Córdova; UACH-CF-8251-8402.

Identification. This is the second largest species of its genus in Chihuahua and the only species inhabiting the highlands of the Sierra Madre Occidental. The dorsal color varies from shades of brown to grayish. White fur patches are found on the nose, around the eyes, and un- der the tail ( Smith 1991).

Distribution. Canada, USA, and most of Mexico (but not in Baja California) to northern South America ( Smith 1991). Recorded habitats in Chihuahua are quebradas, si- erras, valleys, and arid lands.

Remarks. White-tailed Deer occur in most of the forested areas of the state and only marginally the arid regions, where it is replaced by the larger, Mule Deer, Odocoileus hemionus (Rafinesque, 1817) (López-González and Gar- cía-Mendoza 2012).