This new Purple-banded Bumble bee is a method-size of bumble-bee, that have queens, reproductive men, and you may an inferior worker status
step three.step one Species malfunction
He’s got a short deal with and you can tongue length in line with really most other bumble bees. New upperside out-of a lot of the latest instinct is actually black, but there is a distinctive, large band of golden-yellow tresses across the markets 2 and you may step three (Contour step 1). Part 5 was black colored otherwise pale-yellow-brownish.
The latest guys is similar in along with on lady, despite the fact that normally have significantly more purple hairs towards the face. He’s advanced sizes between queens and you may pros, and then have apparently small antennae (COSEWIC 2015). To learn more about morphology, get a hold of Williams mais aussi al. (2014).
The Reddish-banded Bumble-bee are earlier sensed conspecific towards the West Bumble Bee ( Bombus occidentalis) but Bertsch et al. (2010) and you can Williams et al. (2012) said mitochondrial CO1 sequences sufficiently divergent to take on the two ) discovered consistent morphological and you may unit characters help one or two distinctive line of species.
Shape step one. Queen Red-colored-banded Bumble bee towards the willow, Ontario. T2 and you may T3: Abdominal tergites dos and you may step three. Photo: Sarah Johnson. Used in combination with permission.
Profile step one portrays an image of a close-up off a king reddish-banded Bumblebee with the willow, Ontario. They means that new gut of Yellow-banded Bumblebee is black and there’s a standard gang of golden yellow all over the areas 2 and you can step three which have locations 5 becoming black.
step 3.2 Types population and shipments
The latest Purple-banded Bumble bee happens only into the The united states. It ranges out-of Georgia north so you’re able to Labrador, and western from the north Us and you can Canada in order to Montana, British Columbia (BC), the latest Northwest Areas (NT), together with southeastern Yukon (YT) (Profile dos). Its northern restrict approximately uses latitudinal treeline. Earlier ideas out-of Alaska (e.g., just like the found during the COSEWIC (2015)) are reassessed, as well as the Red-colored-banded Bumble-bee has stopped being considered element of one to country’s fauna (Sikes and you may Rykken 2020). Up to fifty-60% of the international variety is actually Canada (COSEWIC 2015).
area but Nunavut (NU) (COSEWIC 2015), although it might occur throughout the unsurveyed southwest area of these region (Profile dos). In the YT it’s missing west of https://kissbrides.com/fr/epouses-tunisiennes/ the brand new Mackenzie Hills, nonetheless it selections extensively into the main part of BC (COSEWIC 2015).
Figure 2. Worldwide range of Purple-banded Bumble bee. Findings (art gallery specimens and you will pictures affirmed from inside the iNaturalist (2020) and you will Bumble bee Watch (2019)) as 2009 are illustrated from the navy blue dots. Northern maximum away from variety unclear, especially in central Canada. Study away from L. Richardson and you will S. Cannings, map from the B. Fournier (Bodies regarding Northwest Territories). Dataset is not comprehensive; certain specimens (elizabeth.grams. those in Prescott mais aussi al. 2019) weren’t integrated because the studies are received immediately following .
Contour dos shows the worldwide set of the brand new Red-colored-banded Bumblebee. The number runs out of Georgia northern so you can Labrador and you will western courtesy the new northern You and you may Canada so you can Montana, Uk Colombia in addition to Northwest Areas. It happens in virtually any Canadian province and you will region except Nunavut. The newest findings of the species between 1824 and you will 2008 is actually demonstrated with light dots therefore the findings of one’s species anywhere between 2009 and you can 2019 are demonstrated that have navy blue dots.
The Yellow-banded Bumble-bee used to be perhaps one of the most preferred bumble bees out of eastern and you can boreal Canada however, its variety southern from the fresh new boreal nations started initially to reduction in early 1990s. Pattern study are incomplete, although ideal readily available studies put suggests cousin wealth (Yellow-banded Bumble bee according to the bumble bees) from the 10 regional websites across south (sub-boreal) Canada (off 100 Kilometer House, BC, and you will Edmonton east courtesy Ottawa and you can Montreal into Atlantic Provinces) -2013 (Dining table dos in COSEWIC 2015). Generally speaking, the Purple-banded Bumble bee provides handled its broad range in spite of the refuses; the one Canadian exception are extreme southwestern Ontario (we.elizabeth. south and you will west of Kitchener-Waterloo), where in actuality the varieties was constantly uncommon and couple or no possess become found as 2004 (Colla and you may Dumesh 2010; COSEWIC 2015, iNaturalist 2020).