Bumblebees

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Notes

• Around 250 species of bumblebee world wide.
• A number of species are being reviewed for Endangered Species Act
• Solitary queen overwinters and founds a colony in spring, building a population, ending with release of a new generation of queens.
• Decline is synergistic impact of multiple stressors including: disease, pesticide, habitat alteration, small population dynamics.
• Diverse and abundant floral resources, overwintering sites.
• Nationwide ESA Section 10, Conservation Benefit Agreement.
  • Restoring native floral resources, reduce herbicide bee conflicts.
• Bombus franklini - the one listed species. Voluntary conservation measures are proposed.
• Bombus occidentalis is under review in 2025 under review
• Bombus suckleyi is under review with decision expected in 2024 or 2025.
• 'Bombus morrisonii are expected to be reviewed in the future.

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