Phone: +507 212.8109
Fax: +507 212.8148
Education and Degrees
University High School, Minneapolis, Minnesota 1965-69
University of Minnesota, Minneapolis; advanced Spanish 1968-69
Macalester College, Saint Paul, Minnesota; Humanities 1969-71
University of Washington, Seattle; Liberal Arts 1972
BS (entomology) Oregon State University 1975
Ph.D. (entomology) University of Kansas 1979. "Competition Studies of Colonizing Africanized Honey Bees and Native Bees in South America"
Pot-Honey: A legacy of stingless bees. (editor, with P. Vit and S. R. M. Pedro, 2013). Springer, New York.
Arthropod Diversity in a Tropical Forest (coauthor with Y. Basset et al, 2012). Science, 338(6113): 1481-1484.
Orchid Bees of Tropical America: Biology and Field Guide (with Paul Hanson, 2004). InBio Press, Costa Rica.
Pollination of Cultivated Plants in the Tropics. (editor, 1995). Food and Agriculture Organization of the United Nations, Rome, Italy.
Pollen and Spores of Barro Colorado Island. (with Enrique Moreno, 1991). Missouri Botanical Garden, St. Louis.
Ecology and Natural History of Tropical Bees. (1989). Cambridge University Press, New York.