Species Profile

Suckley’s Cuckoo Bumble Bee

Scientific Name: Bombus suckleyi
Taxonomy Group: Arthropods
COSEWIC Range: Yukon, Northwest Territories, British Columbia, Alberta, Saskatchewan, Manitoba, Ontario, Quebec, New Brunswick, Prince Edward Island, Nova Scotia, Newfoundland and Labrador
COSEWIC Assessment Date and Status Change: November 2019
COSEWIC Status: Threatened
COSEWIC Status Criteria: A2bce
COSEWIC Reason for Designation: This bumble bee is a nest parasite of other bumble bees and depends on its hosts to rear its young. It is found in all provinces and territories except Nunavut. It is more frequent in the west than in the east and always much less frequent than its hosts. Despite significantly increased search effort for bumble bees in Canada over the last two decades, fewer individuals of this species have been encountered than in the past. There has been a decline of more than 30% in relative abundance compared to all bumble bees (indicating a population decline) and a decline in area of occupancy. The decline has been particularly severe in areas where the species was historically more frequent, in British Columbia and Alberta. The primary threat is the steep decline of the host bumble bee species, again in British Columbia and Alberta. The major threats to the hosts are the escape of pathogen-infected bumble bees from managed colonies in commercial greenhouses, pesticide use (particularly neonicotinoids), and climate change.
COSEWIC History of Status Designation: Designated Threatened in November 2019.
SARA Status: No schedule, No Status
Date of Listing (yyyy-mm-dd):

No schedule - No Status

Individuals of this species may be protected under Schedule 1 under another name; for more information see Schedule 1, the A-Z Species List, or if applicable, the Related Species table below.

Please note that this information is provided for general information purposes only. For the most up to date and accurate list of species listed under the Species at Risk Act, please see the Justice Laws Website.

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Protection

Federal Protection

Provincial and Territorial Protection

To know if this species is protected by provincial or territorial laws, consult the provinces' and territories' websites.

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Documents

PLEASE NOTE: Not all COSEWIC reports are currently available on the SARA Public Registry. Most of the reports not yet available are status reports for species assessed by COSEWIC prior to May 2002. Other COSEWIC reports not yet available may include those species assessed as Extinct, Data Deficient or Not at Risk. In the meantime, they are available on request from the COSEWIC Secretariat.

4 record(s) found.

COSEWIC Status Reports

  • COSEWIC Assessment and Status Report on the Suckley’s Cuckoo Bumble Bee (Bombus suckleyi) in Canada (2020-10-26)

    Suckley’s Cuckoo Bumble Bee is one of six true cuckoo bumble bee species occurring in North America. Both sexes are medium-sized (15–25 mm length). Females are slightly larger than males and have an abdomen with shiny black terga (dorsal abdominal segments) and yellow hairs near the tip; males have a similar colour pattern, but with more yellow hair on the abdomen. Unlike nest-building bumble bees, female cuckoo bumble bees do not possess a corbicula (pollen basket) on the hind leg as they do not collect pollen for their offspring. Note: This COSEWIC assessment was received by the Minister on September 2, 2020.

Response Statements

  • Response Statement - Suckley’s Cuckoo Bumble Bee (2020-12-02)

    This bumble bee is a nest parasite of other bumble bees and depends on its hosts to rear its young. It is found in all provinces and territories except Nunavut. It is more frequent in the west than in the east and always much less frequent than its hosts. Despite significantly increased search effort for bumble bees in Canada over the last two decades, fewer individuals of this species have been encountered than in the past. There has been a decline of more than 30% in relative abundance compared to all bumble bees (indicating a population decline) and a decline in area of occupancy. The decline has been particularly severe in areas where the species was historically more frequent, in British Columbia and Alberta. The primary threat is the steep decline of the host bumble bee species, again in British Columbia and Alberta. The major threats to the hosts are the escape of pathogen-infected bumble bees from managed colonies in commercial greenhouses, pesticide use (particularly neonicotinoids), and climate change.

COSEWIC Annual Reports

  • COSEWIC Annual Report 2019 to 2020 (2020-09-02)

    Over the past year COSEWIC assessed a total of 21 wildlife species, none of which were assigned a status of Not at Risk. Of these 21, COSEWIC re-examined the status of nine wildlife species; of these, 44% were reassessed at the same or lower level of risk. To date and with the submission of this report, COSEWIC’s assessments now include 810 wildlife species in various risk categories including 363 Endangered, 190 Threatened, 235 Special Concern, and 22 Extirpated (i.e. no longer found in the wild in Canada). In addition, 19 wildlife species have been assessed as Extinct, 59 wildlife species have been designated as Data Deficient, and 198 have been assessed as Not at Risk.

Consultation Documents

  • Consultation on Amending the List of Species under the Species at Risk Act: Terrestrial Species December 2020 (2020-12-02)

    COVID-19 and the consultations on the listing of species at risk As a result of the ongoing COVID 19 situation, it is not possible to have in-person meetings. Taking this into consideration, please note that consultation closing dates have been set for both the Normal and Extended consultations for the terrestrial species considered in this document. We will work to ensure that all the known, potentially affected parties have the opportunity to contribute to the consultations and that the consultation process is flexible and sensitive to the current context. If you wish to contribute, please submit your comments by April 2, 2021 for species undergoing normal consultations and by September 2, 2021 for species undergoing extended consultations. You may provide comments by email, letters, or through the online survey. The Government of Canada is committed to preventing the disappearance of wildlife species at risk from our lands. As part of its strategy for realizing that commitment, on June 5, 2003, the Government of Canada proclaimed the Species at Risk Act (SARA). Attached to the Act is Schedule 1, the list of the species provided for under SARA, also called the List of Wildlife Species at Risk. Extirpated, Endangered and Threatened species on Schedule 1 benefit from the protection afforded by the prohibitions and from recovery planning requirements under SARA. Special Concern species benefit from its management planning requirements. Schedule 1 has grown from the original 233 to 622 wildlife species at risk. Please submit your comments by April 2, 2021, for terrestrial species undergoing normal consultations and by September 2, 2021, for terrestrial species undergoing extended consultations. For a description of the consultation paths these species will undergo, please visit the Species at Risk (SAR) Public Registry website at: The Minister of the Environment's Response to Species at Risk Assessments. To respond to survey questions, please go to the survey page. Consultation ends on April 2, 2021 for species undergoing a normal consultation process and on September 2, 2021 for species undergoing an extended consultation process.
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