The fresh new Purple-banded Bumble bee try an average-measurements of bumble bee, having queens, reproductive guys, and you may a smaller sized worker status

step three.step 1 Species description

He’s a preliminary face and you may tongue duration in accordance with extremely almost every other bumble bees. Brand new upperside of much of the new gut is actually black, but there’s an original, wider group of golden-yellow tresses across segments 2 and 3 (Figure 1). Phase 5 are black colored otherwise pale-yellow-brownish.

The fresh men are comparable inside the colour toward females, although they will often have way more purple hairs towards deal with. He’s intermediate sizes between queens and you can experts, while having apparently quick antennae (COSEWIC 2015). For more information on morphology, see Williams mais aussi al. (2014).

The fresh new Yellow-banded Bumble bee is actually formerly believed conspecific with the Western Bumble Bee ( Bombus occidentalis) but Bertsch mais aussi al. (2010) and Williams et al. (2012) said mitochondrial CO1 sequences well enough divergent to take on both ) discovered consistent morphological and molecular characters support a couple of distinctive line of kinds.

Shape step one. Queen Purple-banded Bumble-bee towards the willow, Ontario. T2 and you may T3: Abdominal tergites 2 and you may 3. Photo: Sarah Johnson. Used with permission.

Figure 1 depicts an image of an almost-right up from a king red-banded Bumblebee towards the willow, Ontario. It implies that the abdomen of your Reddish-banded Bumblebee is actually black and there is a broad number of golden-yellow around the its areas dos and you will step 3 which have markets 5 getting black.

step 3.2 Species society and you can shipment

The fresh new Yellow-banded Bumble bee happen only for the America. They selections from Georgia north to help you Labrador, and you will west from north United states and Canada so you’re able to Montana, British Columbia (BC), this new Northwest Territories (NT), as well as the southeastern Yukon (YT) (Shape dos). Their northern limitation approximately employs latitudinal treeline. Earlier info from Alaska (elizabeth.grams., since the shown for the COSEWIC (2015)) have already been reassessed, and Reddish-banded Bumble bee has stopped being considered element of that nation’s fauna (Sikes and you will Rykken 2020). Around fifty-60% of the around the world assortment is within Canada (COSEWIC 2015).

territory except Nunavut (NU) (COSEWIC 2015), although it could happen on unsurveyed southwestern corner of the area (Contour 2). Regarding the YT it’s missing west of the fresh new Mackenzie Slopes, nevertheless range commonly towards central section of BC (COSEWIC 2015).

Shape 2. International a number of Red-banded Bumble-bee. Findings (museum specimens and you can photos affirmed for the iNaturalist (2020) and you may Bumble-bee Check out (2019)) given that 2009 are portrayed by deep blue dots. North restriction out of assortment unclear, particularly in main Canada. Studies out-of L. Richardson and S. Cannings, map of the B. Fournier (Regulators away from Northwest Areas). Dataset is not total; particular specimens (e.grams. those in Prescott ainsi que al. 2019) weren’t incorporated while the investigation are received after .

Contour 2 suggests the worldwide variety of the newest Reddish-banded Bumblebee. The number expands from Georgia northern so you can Labrador and west as a consequence of new northern You and you can Canada so you can Montana, British Colombia and Northwest Territories. It happens in virtually any Canadian state and area but Nunavut. The fresh new observations of your species ranging from 1824 and 2008 was shown that have white dots and also the observations of one’s variety anywhere between 2009 and 2019 try displayed which have deep blue dots.

The latest Red-banded Bumble bee was once perhaps one of the most popular bumble bees of eastern and boreal Canada but the wealth southern area off the new boreal regions started to reduction in the early 1990’s. Pattern analysis is imperfect, but the most useful offered analysis lay shows cousin wealth (Yellow-banded Bumble-bee relative to all of the bumble bees) from the ten local web sites across southern (sub-boreal) Canada (away from 100 Mile Household, BC, and you may Edmonton eastern owing to Ottawa and you may Montreal toward Atlantic Provinces) -2013 (Desk 2 for the COSEWIC 2015). In general, brand new Reddish-banded Bumble bee has actually was able their wide range inspite of the declines; the only Canadian exemption is generally high southwest Ontario (i.elizabeth. southern area and to the west of Kitchener-Waterloo), the spot where the types is always unusual and couple if any provides been located given that 2004 (Colla and you may Dumesh 2010; Bolivien femmes COSEWIC 2015, iNaturalist 2020).