Subspeciation in Pocket Gophers of Kansas, [KU. Vol. 1 No. 11]Hall, E. Raymond (Eugene Raymond)
Science
Subspeciation in Pocket Gophers of Kansas, [KU. Vol. 1 No. 11]
Hall, E. Raymond (Eugene Raymond)
Mammals -- Kansas; Pocket gophers
_Geomys lutescens_ Merriam, North Amer. Fauna, 8:127, January
31, 1895.
_Geomys breviceps llanensis_, Hibbard, Trans. Kansas Acad.
Sci., 36:240, 1933; Black, 30th Bienn. Rept. Kansas State Board
Agric., 35:181. 1937.
_Geomys lutescens jugossicularis_ Hooper, Occas. Papers Mus.
Zoöl., Univ. Michigan, 420:1, June 28, 1940.
_Type._--Male, adult, skin and skull, no. 14083 Museum of
Natural History, University of Kansas; from 1-1/2 miles north
of Fowler, Meade County, Kansas; obtained December 30, 1941, by
H. H. Hildebrand, original number 16.
_Distribution in Kansas._--Southwestern Kansas from Meade
County eastward certainly to Pratt and Clark counties; from
Pawnee County southward probably to the Oklahoma boundary.
_Diagnosis._--Size of body medium; color of upper parts Cinnamon
Brown; skull with occiput strongly inclined anterodorsally in
males.
[Illustration: FIG. 2. Three views of the skull of the type
specimen of _Geomys bursarius industrius_. A. Lateral view; B.
Dorsal view; C. Ventral view. All natural size.]
_Description._--Color: Upper parts Cinnamon Brown, slightly
reddish, but in some specimens collected in September, in
Pawnee County, near (15´ _i_) Ochraceous-Tawny; underparts
usually Wood Brown, somewhat whitish anteriorly; forefeet
white; hind feet and approximately distal half of tail whitish.
Size: Medium (see measurements), total length averaging not
more than 271 mm. in males and 254 in females; hind foot
averaging not more than 35 mm. in males and less than 32 in
females. Skull: In males, least width of braincase equal to
distance from alveolus of incisor to anterior border of
alveolus of first upper molar, occiput strongly inclined
anterodorsally, temporal impressions usually united in a low
sagittal crest, zygomatic arch heavy and curved at level of
jugal bone. In adult females least width of braincase
approximately equal to distance from alveolus of incisor to
anterior border of alveolus of first upper molar (not
premolar); occiput less inclined anterodorsally
than in males; temporal ridges not forming a sagittal crest. In
young females the width of the braincase is more than the
distance between the alveoli of the incisor and first molar.
_Comparisons._--_G. lutescens industrius_ differs from _G. lutescens
lutescens_ in: Color darker; least width of braincase not equal to
(usually more than) the distance from the alveolus of incisor to the
anterior border of the alveolus of the first upper molar.
_G. lutescens industrius_ differs from _G. lutescens jugossicularis_ in:
Color slightly darker, the former being Cinnamon Brown instead of
Vinaceous Cinnamon, with hairs basally Deep Neutral Gray in upper parts
and underparts. Skull: Jugular part of zygomatic arch more curved
(convex dorsally) and occiput far more inclined anterodorsally; lower
part of mastoidal ridge more prominent.
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