About the Authors
Pennsylvania Department of Agriculture, Bureau of Plant Industry–Apiculture, Harrisburg, Pennsylvania, United States of America
Department of Entomology, The Pennsylvania State University, University Park, Pennsylvania, United States of America
Florida Department of Agriculture, Bureau of Plant and Apiary Inspection, Apiary Inspection Section, Division of Plant Industry, Gainesville, Florida, United States of America
United States Department of Agriculture (USDA)–ARS Bee Research Laboratory, Beltsville, Maryland, United States of America
The authors have declared that no competing interests exist.
Conceived and designed the experiments: Dv JHJ JP. Performed the experiments: JHJ RMU JP. Analyzed the data: Dv RMU. Contributed reagents/materials/analysis tools: Dv. Wrote the paper: Dv JHJ RMU JP.