Brown-tailed Bumble Bee (Tricolour Bumblel Bee; Or

Bombus mixtus

General Status Rank: 
Secure
Common Name: 
Brown-tailed Bumble Bee (Tricolour Bumblel Bee; Or
Scientific Name: 
Bombus mixtus
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Taxonomy
Group: 
Hymenoptera (Bee)
Kingdom: 
Animalia
Phylum: 
Arthropoda
Class: 
Insecta
Order: 
Hymenoptera
Family: 
Apidae
Distribution

Ecozones

Taiga Plains, Taiga Shield
References: 
H237

Distribution

e the species tends to higher latitudes, there may be many unchecked subalpine areas that are difficult to access and survey. Widespread in many ecozones across Canada. Thoughout NWT in forested areas
Score: 
G
References: 
HSS010

Number of Occurrences

13 (F Smith to Inuvik); 11 (DD14);
Score: 
BE
References: 
H237
HSS010
DD14

Area of Occupancy

Score: 
-
References: 
HSS010
Population

Population Size

Population size unknown, not possible to estimate.
References: 
HSS010
Trends

Trends

Short-term trend: Presumably stable.
References: 
HSS010
Threats

Threats

Cumulative threats from habitat loss and/or conversion to agriculture/urban development, invasive non-native species, climate change, livestock grazing, recreational use, etc. (as outlined in short and long-term trends) have all likely contributed to declines in bee abundance. The specific impact to each bee species is unknown due to lack of specimen data, surveys, natural history information of a species and analysis of these impacts on these variables.
Score: 
C
References: 
HSS010

Intrinsic Vulnerability

Score: 
-
References: 
HSS010
General Status Rank
Rank: 
Secure
Status Rank Description: 
There are some taxonomic challenges (the species has the same barcode as B. sandersoni, though is coloured differently). Because the species tends to higher latitudes, there may be many unchecked subalpine areas that are difficult to access and survey. There are numerous recent records from the Fort Simpson area (Poplar River Fuel Cache, Checkpoint (to W), 10km gravel pit) (Larter/Heron/Sheffield data).
S Rank: 
S4S5
Decision Process Description: 
Draft rank by Sheila Colla and Cory Sheffield of York University (2010); Reviewed in 2014 by C Sheffield, modified from undetermined to secure (more information (HSS010).; Reviewed in 2020 by C Sheffield, no change
Last Updated: 
November 21, 2020

References

Area of Occupancy

  • Hebert, Remi (2014) A set of 2 e-mails GS bees and GS bees - Abeilles SG with ranks proposed by Cory Sheffield and Jennifer Heron (07/08/2014). - HSS010 Return

Ecozones

  • Sheffield, Cory (2009) NWT Bees - Distribution Data April 2009. E-mail to S Carriere 06/07/2010 from corysheffield@yahoo.ca. Excel attachment with lat long from labels of bees collected in the NWT (mostly from CNC) printed copy in binder - H237 Return

Intrinsic Vulnerability

  • Hebert, Remi (2014) A set of 2 e-mails GS bees and GS bees - Abeilles SG with ranks proposed by Cory Sheffield and Jennifer Heron (07/08/2014). - HSS010 Return

Number of Occurrences

  • Sheffield, Cory (2009) NWT Bees - Distribution Data April 2009. E-mail to S Carriere 06/07/2010 from corysheffield@yahoo.ca. Excel attachment with lat long from labels of bees collected in the NWT (mostly from CNC) printed copy in binder - H237 Return
  • Hebert, Remi (2014) A set of 2 e-mails GS bees and GS bees - Abeilles SG with ranks proposed by Cory Sheffield and Jennifer Heron (07/08/2014). - HSS010 Return
  • Dumesh s., Sheffield, CS and Richardson Leif. (2012) NWT bee database with ranks (version June 2012).. e-copy available - DD14 Return

Population Size

Hebert, Remi (2014) A set of 2 e-mails GS bees and GS bees - Abeilles SG with ranks proposed by Cory Sheffield and Jennifer Heron (07/08/2014). - HSS010 Return

Range Extent

  • Hebert, Remi (2014) A set of 2 e-mails GS bees and GS bees - Abeilles SG with ranks proposed by Cory Sheffield and Jennifer Heron (07/08/2014). - HSS010 Return

Short Term Trends

  • Hebert, Remi (2014) A set of 2 e-mails GS bees and GS bees - Abeilles SG with ranks proposed by Cory Sheffield and Jennifer Heron (07/08/2014). - HSS010 Return

Threats

  • Hebert, Remi (2014) A set of 2 e-mails GS bees and GS bees - Abeilles SG with ranks proposed by Cory Sheffield and Jennifer Heron (07/08/2014). - HSS010 Return