Comparative Morphology of the Two Species of Grasshopper Mice, Genus Onychomys, in New Mexico

Author

Gerald L. Traut

Publication Date

4-15-1963

Abstract

Inasmuch as individual specimens of the cricetid genus Onychomys Baird are frequently difficult to identify to species even using the commonly used key characters, a total of 376 grasshopper mice was examined to determine how and to what extent the two species, O. leucogaster and O. torridus, differ from each other in New Mexico.

To this end, 31 measurements (cranial, skeletal, and hair) and ratios were ascertained for each individual. The nearly 12,000 figures were summarized by constructing 161 modified Dice-Lerass diagrams.

Language

English

Document Type

Thesis

Degree Name

Biology

Level of Degree

Masters

Department Name

UNM Biology Department

First Committee Member (Chair)

James Smith Findley

Second Committee Member

William Clarence Martin

Third Committee Member

William George Degenhardt

Recommended Citation

Traut, Gerald L.. "Comparative Morphology of the Two Species of Grasshopper Mice, Genus Onychomys, in New Mexico." (1963). https://digitalrepository.unm.edu/biol_etds/254