The American Bumble Bee, Bombus pensylvanicus, is one of the most common bumble bee species found on the Front Range and is one of the 24 species found in Colorado. This species is found only in the lower elevations of the state (3500-5500 feet above sea level) and its range is one of the greatest for all North American bumble bees stretching from the grasslands east of the Rocky Mountains all the way to the coastal Atlantic states, north into Canada and south into Mexico.
About the Collection, Museum of Natural History
How the Bees You Know are Killing the Bees You Don't
Bees Get a Big Tribute at the American Museum of Natural History - The New York Times
Bombus ternarius NatureServe Explorer
Buzz Kill: The Bee Collection at the Smithsonian's Natural History Museum
Determining the dietary preferences and population genetics of an endangered bumble bee, Bombus affinis, by maximizing the use of museum specimens
Rusty-patched Bumble Bee Guide - New York Natural Heritage Program
Suckley's Cuckoo Bumble Bee
Bumblebees
American Bumble Bee, Museum of Natural History
Can insects have culture? Puzzle-solving bumblebees show it's possible - OPB