. Biology of New World Microtus. Rodents; Rodents; Microtus; Voles. 104 Hoffmann and Koeppl. 0 400 III id scale of miles A'^-^ l^ Fig. 14. Distribution of Microtus pinetorum (from Hall, 1981). Subspecies are: \, M. p. auricularis; 2, M. p. carbonanus; 3, M. p. nemoralis; 4, M. p. parvulus; 5, M. p. pinetorum; 6, M. p. scalopsoides; 7, M. p. schmidti. three species within Rocky Mountain montane taiga (M. longicau- dus, M. montanus, and M. nchardsoni). The southwestern pine-oak forest inhabitant, M. mexicanus, also might be included either here or with the three relict species (M. guatemalensis,
. Biology of New World Microtus. Rodents; Rodents; Microtus; Voles. 104 Hoffmann and Koeppl. 0 400 III id scale of miles A'^-^ l^ Fig. 14. Distribution of Microtus pinetorum (from Hall, 1981). Subspecies are: \, M. p. auricularis; 2, M. p. carbonanus; 3, M. p. nemoralis; 4, M. p. parvulus; 5, M. p. pinetorum; 6, M. p. scalopsoides; 7, M. p. schmidti. three species within Rocky Mountain montane taiga (M. longicau- dus, M. montanus, and M. nchardsoni). The southwestern pine-oak forest inhabitant, M. mexicanus, also might be included either here or with the three relict species (M. guatemalensis, M. oaxacensis, and M. umbrosus) that inhabit montane cloud forest, which includes a pine-oak forest aspect; these constitute the next largest ecological group. Tundra-dwelling voles comprise two species (M. miurus and M. oeconomus), both Beringian in distribution (see below), and re- cent entrants into the New World. In contrast, the two deciduous forest species (M. pinetorum and M. quasiater) probably are much more ancient. Finally, the broad-leaf sclerophyll woodland-shrub- land of the Pacific Coast ("chaparral") and its associated grassland harbors one species (M. californicus), as does the temperate grass- land of the Great Plains (M. ochrogaster). Thus, whereas most species of Microtus inhabit meadows and. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Tamarin, Robert H; American Society of Mammalogists. [Stillwater, Okla. ] : American Society of Mammalogists ; Shippensburg, Pa. : distributed by Vertebrate Museum, Shippensburg University
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