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Geographic Variation in the Harvest Mouse, Reithrodontomys megalotis, On the Central Great Plains And in Adjacent Regions
The western harvest mouse, Reithrodontomys megalotis, inhabits most parts of the central Great Plains and adjacent regions of tall grass prairie to the eastward, shows a marked predilection for grassy habitats, is common in many areas, and is notably less variable geographically than most other cricetids found in the same region. R. megalotis occurs (see Hall and Kelson, 1959:586, map 342) from Minnesota, southwestern Wisconsin, northwestern Illinois, Iowa and Missouri westward to, but apparently not across, the Rocky Mountains from southeastern Alberta to Colorado; it is known in Oklahoma only from the Panhandle, thence southward through the Panhandle and Trans-Pecos areas of Texas to southern Mxico, westward across the mountains in New Mexico to the Pacific Coast, and northward to the west of the Rockies to southern British Columbia. Hoffmeister and Warnock (1955) studied western harvest mice from Illinois, Iowa, northeastern Kansas, Minnesota and Wisconsin, concluded that one subspecific name (Reithrodontomys megalotis dychei J. A. Allen, 1895, with type locality at Lawrence, Douglas Co., Kansas) applied to all, and relegated Reithrodontomys megalotis pectoralis Hanson, 1944 (type locality at Westpoint, Columbia Co., Wisconsin) to synonymy under dychei. Our study, based upon an examination of 1350 specimens, concerns the area west of the Missouri River from Kansas and Nebraska westward to Montana, Wyoming, Colorado and northern New Mexico. Our objectives were to study variation in R. megalotis in the region indicated and to decide what subspecific names properly apply to populations of the species that occur there. ......Buy Now (To Read More)
Ebook Number: 29563
Author: Jones, J. Knox
Release Date: Aug 1, 2009
Format: eBook
Language: English
Contributor (Author): Mursaloglu, B.
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