Compiling the Colorado bee list. Problematic taxa
History of bee research in Colorado. Contributors ; Current and future research ; Importance of voucher specimens
Colorado bee diversity. Bee species diversity in comparison to other states ; Collecting biases and areas for future study ; Native vs. introduced species
Bee biology. Life cycle of a bee ; Solitary, social, and parasitic bees ; Nesting biology ; Floral associations
The Colorado bee list. Colletidae ; Halictidae ; Andrenidae ; Melittidae ; Megachilidae ; Apidae
Table of natural history traits for Colorado bee genera.