قراءة كتاب Geographic Range of the Hooded Skunk, Mephitis macroura With Description of a New Subspecies from Mexico
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Geographic Range of the Hooded Skunk, Mephitis macroura With Description of a New Subspecies from Mexico
humid division of the Tropical Life-zone probably has tended to restrict the spread southward and westward of Mephitis; however, on this Pacific slope the humid belt is less humid and it is less continuous, we think, than on the Atlantic slope.
Four subspecies of Mephitis macroura may be recognized. They are as follows:
Mephitis macroura milleri Mearns
1897. Mephitis milleri Mearns, Proc. U. S. Nat. Mus., 20:467, 1897.
1901. Mephitis macroura milleri, Bull. Amer. Mus. Nat. Hist., 14:334, November 12, 1901.
Type locality.—Fort Lowell, Pima County, Arizona.
Range.—Northwestern Mexico and southeastern Arizona. See figure 1. Marginal occurrences (unless otherwise indicated, after Howell, N. Amer. Fauna, 20:42, 43, 1901) are: Arizona: Santa Catalina Mountains; Tucson; Fort Lowell. Chihuahua: Casas Grandes; Chihuahua (City). Coahuila: La Ventura. Chihuahua: Guadalupe y Calvo (mountains near). Sonora: Camoa; Hermosillo; Sierra Cubabi (Burt, Miscl. Publ., Mus. Zool., Univ. Michigan, 39:30, 1938).
Characters.—Long skull (♂ 60 mm, ♀ 56 mm) and large m1.
Mephitis macroura macroura Lichtenstein
1832. Mephitis macroura Lichtenstein, Darstellung Säugethier, pl. 46, with accompanying text, 1832.
Type locality.—Mountains northwest of the City of Mexico.
Range.—Southern half of Mexican Plateau and south to Guatemala. See figure 1. Marginal occurrences (all from Howell, N. Amer. Fauna, 20:41, 42, 1901) are: Tamaulipas: Jaumave. Veracruz: Las Vigas; Jico; Orizaba. Puebla: Tehuacan. Guatemala: Dueñas (vicinity). Oaxaca: 15 mi. W Oaxaca. Colima: Hacienda Magdalena. Jalisco: San Sebastian. Tepic: Santa Teresa. Zacatecas: Valpariso.
Characters.—Skull of medium size (basal length, ♂ 56, ♀ 54); tail averaging shorter than head and body.
Mephitis macroura vittata Lichtenstein
1832. Mephitis vittata Lichtenstein, Darstellung Säugethier, pl. 47, with accompanying text, 1832.
1901. Mephitis macroura vittata, Allen, Bull. Amer. Mus. Nat. Hist., 14:334, November 12, 1901.
Type locality.—"San Matteo el Mar" [= San Mateo del Mar], Oaxaca.
Range.—Known only from the type locality. See figure 1.
Characters.—Skull short (♂ 54.6, ♀ 52.3); narrow across mastoid processes; tail long; body short.
Mephitis macroura eximius new subspecies
Type.—Female, adult, skin with skull, No. 19272, Mus. Nat. Hist., Univ. Kansas; 15 kilometers west of Piedras Negras, 300 feet elevation, Veracruz, Mexico; 13 January 1947; obtained by J. Mazza and Walter W. Dalquest; original No. 7017, W. W. Dalquest.
Range.—From the vicinity of the type locality on the arid coastal plain of the lowlands of central Veracruz. See figure 1.
Diagnosis.—Size small (see measurements); tail long, ranging from 110 to 133 percent of length of head and body; color black, with white areas containing a few black hairs, and in non-hooded phase with white lateral stripes low on sides of body and in some specimens almost absent; skull small but broad across mastoid processes.
Comparisons.—From Mephitis macroura macroura of the southern part of the Mexican Plateau, M. m. eximius differs in shorter head and body, relatively (to body) longer tail, and smaller skull. From Mephitis macroura vittata of the tropical lowlands of the Pacific slope of Oaxaca, M. m. eximius differs in