1. Program in Behavior, Ecology, Evolution, and Systematics University of Maryland College Park MD USA
2. National Museum of Natural History Vertebrate Zoology Smithsonian Institution Washington DC USA
3. Department of Biology and Coastal Studies Center Bowdoin College Brunswick ME USA
4. Department of Biology University of Nevada Reno NV USA
5. Department of Biology Utah State University Logan UT USA
6. Department of Botany University of Wyoming Laramie WY USA