We would like to thank several people who initiated this project and encourage our work. Mike English, Ellis Huddleston, H. Grant Kinzer, J. Gordon Watts, and James Zimmerman, all entomologists at New Mexico State University, have been especially helpful.

Mike Perry of the USDA, APHIS, PPQ office in Roswell and the late Floyd Werner of the University of Arizona in Tucson provided a number of additional records. The range data are based on these sources as well as specimens in the collections of the Department of Entomology, Plant Pathology and Weed Science at NMSU; the Biology Department at NMSU; the New Mexico State Department of Agriculture; and the personal collections of David Lightfoot and David Ferguson.

Funding was provided in part through the USDA, APHIS, PPQ Cooperative Agricultural Pest Survey Program.

Special thanks go to Lonnie Black, student assistant at NMSU, for the illustrations. The late Creighton Liesner did part of the computer work on the maps in Figures 2 and 3. Acknowledgement is also made to the University of Oklahoma Press for the base map used to illustrate the biogeographic provinces of the state and the distribution maps for the various species of grasshoppers.