The newest Yellow-banded Bumble-bee are a media-size of bumble bee, having queens, reproductive guys, and you can an inferior staff caste
step three.step one Variety breakdown
He has a preliminary face and you may language duration prior to very other bumble bees. The upperside away from a lot of the gut is black, but there is exclusive, wide group of golden-yellow tresses across the markets 2 and you may 3 (Profile 1). Segment 5 are black colored or pale-yellow-brown.
The latest men is similar inside the along with towards ladies, even though they usually have a great deal more red hairs towards the face. They are advanced in proportions between queens and pros, and now have seemingly brief antennae (COSEWIC 2015). For more information on morphology, find Williams ainsi que al. (2014).
Brand new Reddish-banded Bumble-bee is earlier considered conspecific for the West Bumble Bee ( Bombus occidentalis) but Bertsch ainsi que al. (2010) and you can Williams et al. (2012) advertised mitochondrial CO1 sequences good enough https://kissbrides.com/fr/femmes-francais-chaudes/ divergent to adopt both ) discovered consistent morphological and you can molecular emails help several type of variety.
Figure step one. Queen Red-colored-banded Bumble bee on the willow, Ontario. T2 and T3: Abdominal tergites dos and you may step 3. Photo: Sarah Johnson. Combined with consent.
Figure step one depicts an image of a virtually-up off a king purple-banded Bumblebee to your willow, Ontario. It signifies that the fresh new abdomen of your Purple-banded Bumblebee is black and there’s a general group of golden yellow across the its markets dos and you may step 3 with locations 5 are black colored.
step 3.dos Species populace and you will shipping
The new Purple-banded Bumble-bee happens only inside United states. They selections of Georgia north so you’re able to Labrador, and you will western from northern Us and you may Canada to Montana, Uk Columbia (BC), new Northwest Regions (NT), plus the southeastern Yukon (YT) (Profile 2). Their northern restrict around employs latitudinal treeline. Earlier facts away from Alaska (age.grams., as revealed in COSEWIC (2015)) have already been reassessed, together with Reddish-banded Bumble-bee is no longer said to be part of one state’s fauna (Sikes and you will Rykken 2020). Up to 50-60% of its all over the world variety is in Canada (COSEWIC 2015).
area except Nunavut (NU) (COSEWIC 2015), though it could happen regarding unsurveyed southwestern spot of that area (Contour dos). Regarding YT it is missing to the west of the new Mackenzie Slopes, nonetheless it range extensively into main element of BC (COSEWIC 2015).
Shape dos. International variety of Yellow-banded Bumble bee. Findings (art gallery specimens and photos confirmed during the iNaturalist (2020) and you may Bumble bee Observe (2019)) because the 2009 are depicted because of the dark blue dots. Northern limit off diversity unsure, particularly in central Canada. Studies off L. Richardson and you will S. Cannings, map from the B. Fournier (Regulators regarding Northwest Areas). Dataset isn’t total; some specimens (e.grams. those in Prescott et al. 2019) weren’t incorporated because research was received once .
Profile 2 suggests the global directory of the newest Yellow-banded Bumblebee. The number extends away from Georgia northern so you can Labrador and you can west owing to the brand new north You and Canada so you’re able to Montana, Uk Colombia additionally the Northwest Regions. It occurs in just about any Canadian province and you can territory except Nunavut. New observations of types anywhere between 1824 and you can 2008 are presented which have white dots while the observations of the varieties between 2009 and 2019 try shown that have deep blue dots.
The newest Yellow-banded Bumble bee used to be perhaps one of the most well-known bumble bees off eastern and you can boreal Canada but their abundance southern area away from the fresh boreal nations started to lowering of the early 90s. Development study is actually imperfect, however the greatest readily available analysis lay suggests cousin variety (Yellow-banded Bumble-bee prior to all the bumble bees) on 10 local web sites across southern (sub-boreal) Canada (regarding 100 Kilometer Home, BC, and you may Edmonton east using Ottawa and you can Montreal on Atlantic Provinces) -2013 (Desk 2 into the COSEWIC 2015). In general, the brand new Purple-banded Bumble-bee enjoys maintained the wide range inspite of the refuses; usually the one Canadian exception is generally tall southwestern Ontario (we.e. southern and you will to the west of Kitchener-Waterloo), in which the types is actually always uncommon and you may pair if any keeps started discovered as 2004 (Colla and you may Dumesh 2010; COSEWIC 2015, iNaturalist 2020).