Megachile fortis found in Badlands National Park, South Dakota: Image credit: U.S. Geological Survey Native Bee Inventory and Monitoring Program

Centris lanipes, collected in Puerto Rico. Image credit: U.S. Geological Survey Native Bee Inventory and Monitoring Program

Centris haemorrhoidalis, a bee species from Puerto Rico. Image credit: U.S. Geological Survey Native Bee Inventory and Monitoring Program

Augochloropsis metallica, collected in Laurel, Maryland. Image credit: U.S. Geological Survey Native Bee Inventory and Monitoring Program

Anthidium maculifrons, collected in Key Biscayne National Park, Florida. Image credit: U.S. Geological Survey Native Bee Inventory and Monitoring Program

Xylocopa cubaecola, a carpenter bee endemic to Cuba, collected on the base of Guantanamo Bay. Image credit: U.S. Geological Survey Native Bee Inventory and Monitoring Program

Ceratina smaragdula, an introduced species of small carpenter bee, collected in Hawaii. Image credit: U.S. Geological Survey Native Bee Inventory and Monitoring Program

Bombus griseocollis, collected in Pennsylvania. Image credit: U.S. Geological Survey Native Bee Inventory and Monitoring Program

Halictus ligatus, covered in pollen from an unknown plant. Collected in Pennsylvania. Image credit: U.S. Geological Survey Native Bee Inventory and Monitoring Program