Sam Droege, Rob Jean, and Michael Orr
Based on material extracted from:
Michener, C.D., R.J. McGinley, and B.N. Danforth. 1994. The Bee Genera of North and Central America as well additional characters and scorings from Terry Griswold.
The authors of the Bee Genera book kindly permitted the reproduction of their illustrations in this guide. Natalie Allen, Travis Conrad,Stephanie Kolski, and Amy Lohr did a tremendous amount of work while entering information, scanning, testing, and taking pictures for this volume
Many thanks go to John Pickering and his shop for supporting the effort to update the guides to the identification of bees and other groups of plants and animals
Editing by Tracy Zarrillo
Many thanks to all who contributed suggestions and pictures
If you have questions, comments, or especially corrections please contact Sam at Sam_Droege@usgs.gov or call at 301-497-5840