Bumble-bees
Guides
Bombus
bumble bees, bumblebees
Bombus is the sole extant genus in the tribe Bombini, comprising over 250 species of bumble bees. These bees are distinguished by their ability to forage in cooler temperatures and lower light conditions than many other bees, including honey bees. They perform buzz pollination—vibrating their flight muscles to dislodge pollen from flowers—a behavior critical for crops such as tomatoes, peppers, and cranberries. Multiple Bombus species face significant population declines due to habitat loss, pesticide exposure, climate change, and pathogen transmission from commercial bee operations. Four California species (B. franklini, B. suckleyi, B. occidentalis, B. crotchii) are under endangered species protection consideration, with B. franklini feared extinct since 2006.