David M. Armstrong, Rick A. Adams, Kirk W. Navo, Jerry Freeman and Steven J. Bissell
Department of Environmental, Population and Organismic Biology and University of Colorado Museum,
University of Colorado, Boulder, CO 80309-0334 (DMA);
Department of Biological Sciences, University of Wisconsin, Whitewater, WI 53190-1790 (RAA);
Colorado Division of Wildlife, 0722 S. Road 1E, Monte Vista, CO 81144 (KWN);
University of Colorado Museum, University of Colorado, Boulder, CO 80309-0218 (JF)