Grand Teton National Park Report
Our objectives in this study were threefold: to gather information to be used in ongoing biosystematic studies of the bee genera 1) Hoplitis (Megachilidae), and 2) Stelis (Megachilidae), a cleptoparasitic genus of Hoplitis; 3) to inventory twig-nesting bees and wasps found in the Park for purposes of comparison with samples from other, less pristine, locations.
Parker, F. D. and Tepedino, V. J.
"Preliminary Studies of Twig-Nesting Bees and Wasps of Grand Teton National Park,"
University of Wyoming National Park Service Research Center Annual Report: Vol. 4
, Article 13.
Available at: http://repository.uwyo.edu/uwnpsrc_reports/vol4/iss1/13