The following bibliography has been generated by bringing together all references provided by our content partners. There may be duplication.
Hilty, J. Editor. 2013. Insect Visitors of Illinois Wildflowers. World Wide Web electronic publication. illinoiswildflowers.info, version (11/2013)
See: Abbreviations for Insect Activities, Abbreviations for Scientific Observers, References for behavioral observations
- T. D. A. Cockerell. 1906. Fossil Hymenoptera from Florissant, Colorado. Bulletin of the Museum of Comparative Zoology, Harvard College 50(2):33-58