3.1 Varieties malfunction
They have a short face and you may language duration according to really other bumble bees. Brand new upperside away from most of the newest instinct is actually black colored, but there’s exclusive, broad band of golden-yellow hair around the locations dos and you will step three (Shape step one). Part 5 are black colored or pale-yellow-brownish.
The males is actually comparable in along with into ladies, despite the fact that often have so much more purple hairs towards face. They are intermediate in size between queens and gurus, and get relatively short antennae (COSEWIC 2015). To learn more about morphology, discover Williams et al. (2014).
The latest Red-banded Bumble bee is actually earlier felt conspecific into West Bumble Bee ( Bombus occidentalis) however, Bertsch mais aussi al. (2010) and Williams mais aussi al. (2012) advertised mitochondrial CO1 sequences sufficiently divergent to take on the 2 ) discover consistent morphological and you can unit emails help a few collection of kinds.
Profile step one. King Yellow-banded Bumble bee on willow, Ontario. T2 and T3: Intestinal tergites dos and you can step three. Photo: Sarah Johnson. Used with consent.
Contour 1 depicts a picture of a virtually-upwards away from a king purple-banded Bumblebee to the willow, Ontario. They means that the latest instinct of one’s Red-colored-banded Bumblebee is actually black colored and there’s an over-all band of golden yellow round the the places dos and you may step 3 which have locations 5 getting black.
3.2 Variety populace and you may shipment
Brand new Yellow-banded Bumble-bee takes place only in North america. It range of Georgia north to help you Labrador, and you will west from north You and Canada to Montana, Uk Columbia (BC), new Northwest Areas (NT), additionally the southeastern Yukon (YT) (Profile dos). Their northern restrict roughly uses latitudinal treeline. Earlier records out-of Alaska (elizabeth.grams., as revealed during the COSEWIC (2015)) have already been reassessed, in addition to Purple-banded Bumble bee no longer is said to be element of that country’s fauna (Sikes and you will Rykken 2020). Up to fifty-60% of the worldwide diversity is within Canada (COSEWIC 2015).
region except Nunavut (NU) (COSEWIC 2015), though it could happen about unsurveyed southwestern area of the region (Contour dos). About YT it is missing west of the fresh Mackenzie Hills, however it selections extensively towards main element of BC (COSEWIC 2015).
Figure dos. Global set of Yellow-banded Bumble bee. Findings (art gallery specimens and you will images verified into the iNaturalist (2020) and you will Bumble bee View (2019)) since 2009 are represented by the dark blue dots. Northern limit away from variety unsure, particularly in main Canada. Research off L. Richardson and you will S. Cannings, chart of the B. Fournier (Authorities regarding Northwest Regions). Dataset isn’t comprehensive; certain specimens (elizabeth Jordanie les plus belles femmes.g. those in Prescott et al. 2019) were not incorporated because the data was received shortly after .
Contour dos reveals the global listing of the latest Red-colored-banded Bumblebee. The number offers out-of Georgia northern to Labrador and you may west due to the new north All of us and you may Canada in order to Montana, Uk Colombia additionally the Northwest Areas. It happens in just about any Canadian province and you can area except Nunavut. The brand new observations of variety anywhere between 1824 and 2008 is actually presented which have white dots as well as the observations of your own variety anywhere between 2009 and you will 2019 is presented that have dark blue dots.
The newest Red-colored-banded Bumble bee was previously probably one of the most well-known bumble bees from east and you may boreal Canada but the wealth southern area of the boreal places started to decrease in the early 1990s. Development investigation is actually imperfect, nevertheless the ideal offered data put reveals relative wealth (Yellow-banded Bumble bee in accordance with every bumble bees) at 10 local internet sites across southern (sub-boreal) Canada (regarding 100 Mile Domestic, BC, and you can Edmonton eastern because of Ottawa and you can Montreal to the Atlantic Provinces) -2013 (Desk dos into the COSEWIC 2015). Generally, this new Purple-banded Bumble-bee provides was able the wide range in spite of the refuses; the one Canadian difference tends to be significant southwestern Ontario (we.elizabeth. south and you may west of Kitchener-Waterloo), the spot where the types are always unusual and you will few or no provides already been located as 2004 (Colla and you may Dumesh 2010; COSEWIC 2015, iNaturalist 2020).
