. Distribution of mammals in Colorado. Mammals. 164 MONOGRAPH MUSEUM OF NATURAL HISTORY NO. 3 on habitat preferences and ecological relation- ships among Coloradan pocket gophers, see R. (1964). Where deep sandy soils are present, plains pocket gophers may be abundant, and in some situations, such as irrigated alfalfa lands, may be a considerable nuisance. In addition to feeding on the alfalfa, their burrows may undermine ditch-banks and mounds of earth may damage machinery. Geomys bursarius has been the subject of intensive study in Colorado. Myers and Vaughan (1964) discussed food p
. Distribution of mammals in Colorado. Mammals. 164 MONOGRAPH MUSEUM OF NATURAL HISTORY NO. 3 on habitat preferences and ecological relation- ships among Coloradan pocket gophers, see R. (1964). Where deep sandy soils are present, plains pocket gophers may be abundant, and in some situations, such as irrigated alfalfa lands, may be a considerable nuisance. In addition to feeding on the alfalfa, their burrows may undermine ditch-banks and mounds of earth may damage machinery. Geomys bursarius has been the subject of intensive study in Colorado. Myers and Vaughan (1964) discussed food preferences and Vaughan (1966) studied food-handling and grooming behavior. Patterns of activity were discussed by Vaughan and Hansen (1961), Vaughan (1962) investigated reproduc- tive characteristics, and ectoparasites were re- ported by Miller and Ward (1960). No study of geographic variation of the plains pocket gopher over its range has been published in recent years. At the present time, R. Laurie Hendricksen of the Museum of Nat- ural History, University of Kansas, is studying variation in G. bursarius along a transect from the Missouri River to the Rocky Mountains, generally between the 39th and 40th parallels. In her study, Coloradan populations from Adams and Washington counties are under investigation. Geomys bursarius jugossicularis Hooper Geomys lutescens jugossicularis Hooper, Occas. Papers, Mus. Zool., Univ. Michigan, 420:1, 28 June 1940; type locality, Lamar, Prowers Co., Colorado. Geomys bursarius jugossicularis, Villa-R. and Hall, Univ. Kansas Publ., Mus. Nat. Hist., 1:226, 29 No- vember 1947. Distribution in Colorado.—In suitable habitat in southeastern part of state, south of Platte-Arkansas Divide (Fig. 56). Comparison.—From G. b. lutescens, the subspecies geographically adjacent to the north, G. b. jugossicularis differs in slightly more reddish, less buffy color dorsally, deeper zygomatic plate, and markedly shorter jugal bone. Measurements.—External
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Keywords: ., bookcentury1900, bookcollectionbiodiversity, booksubjectmammals
