Clay Bolt / Rusty patched bumblebee (Bombus affinis) specimen rear view. Female worker in Great Smoky Mountains National Park's invertebrate collection. A species that has declined 87% in the past 15 years due pr...

Clay Bolt / Franklin's bumblebee (Bombus franklini), photographed at the Smithsonian Museum of Natural History, Washington DC. This is the first known species of North American bumble bee that is suspected to hav...

Clay Bolt / Franklin's bumblebee (Bombus franklini), photographed at the Smithsonian Museum of Natural History, Washington DC. This is the first known species of North American bumble bee that is suspected to hav...

Clay Bolt / Franklin's bumblebee (Bombus franklini), photographed at the Smithsonian Museum of Natural History, Washington DC. This is the first known species of North American bumble bee that is suspected to hav...

Clay Bolt / Franklin's bumblebee (Bombus franklini), photographed at the Smithsonian Museum of Natural History, Washington DC. This is the first known species of North American bumble bee that is suspected to hav...

Paul D Stewart / European butterflies on a collector's setting board. Collecting butterflies was a common hobby in Britain and Europe from the 18th to 20th century, as well as widespread for collections in museums.

David Woodfall / Solitary Bees, wasp mimicking species, Oxford Natural History museum, Oxford, UK.

David Woodfall / Solitary Bees, wasp mimicking species, Oxford Natural History museum, Oxford, UK.

David Woodfall / Solitary Bees, wasp mimicking species, Oxford Natural History museum, Oxford, UK.

David Woodfall / Collection of pinned bees caught for research and identification Cowley, Oxford, UK, September 2014.

David Woodfall / Collection of pinned bees caught for research and identification Cowley, Oxford, UK, September 2014.

David Woodfall / Scientist Ivan Wright with sample of pinned bees caught during research, Cowley, Oxford, UK, September 2014.