IUCN threat status:

Least Concern (LC)


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Range Description

This widespread Mexican endemic is currently composed of four distinctive subspecies which may represent several distinct species (see: Smith et al. 2002, Flores-Villela and Canseco-Mrquez 2003, Zaldivar-Riveron et al. 2005).

The nominate subspecies B. i. imbricata, is found along the Transvolcanic belt of central Mexico, including the States of Tlaxacala, Puebla, northern Oaxaca, Veracruz, Jalisco, Cuernovaca, Guanajuato, Distrito Federal, Mexico, Hidalgo and Queretaro. It is found from around 1,800 to 3,000 m asl.

B. i. ciliaris ranges from the Sierra Madre Occidental of Chihuahua, Durango, Zacatecas; in the Pacific coast it is found with a disjunct distribution between Jalisco and Nayarit; from here to the centre of Mexico in Jalisco, Aguascalientes, northeastern Guanajuato, north of Quertaro to San Luis Potos and through the Sierra Madre Oriental to southern Nuevo Leon (Taylor 1949, Taylor 1952, Smith et al. 2000, Lemos-Espinal et al. 2000, Vzquez and Quintero 1997, McCranie and Wilson 2001, Vazquez and Quintero 2005). It occurs above 1,200 m asl.

B. i. jonesi is endemic to the Sierra de Coalcomn, in northern Michoacan State, Mexico. It is found from 1,500 to at least 2,200 m asl.

B. i. planifrons is known only from the northern slopes of the Sierra Juarez, Oaxaca State, Mexico. It is found at elevations of 1,500 to 2,500 m asl.


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© International Union for Conservation of Nature and Natural Resources

Source: IUCN

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