3.step one Varieties dysfunction
They have a preliminary face and you may language duration in line with extremely other bumble bees. New upperside from a lot of the newest gut are black, but there’s an original, wide selection of golden-yellow tresses all over avenues dos and step three (Shape step 1). Section 5 are black or pale yellow-brownish.
The brand new men try similar when you look at the the color to the females, although they normally have alot more yellow hairs toward deal with. He’s intermediate in dimensions between queens and you may professionals, and have apparently brief antennae (COSEWIC 2015). For additional info on morphology, find Williams ainsi que al. (2014).
This new Reddish-banded Bumble bee is previously considered conspecific for the Western Bumble Bee ( Bombus occidentalis) but Bertsch ainsi que al. (2010) and Williams ainsi que al. (2012) claimed mitochondrial CO1 sequences good enough divergent to look at the two ) located uniform morphological and you may unit emails supporting several line of species.
Figure 1. Queen Reddish-banded Bumble bee on the willow, Ontario. T2 and you will T3: Intestinal tergites 2 and you may 3. Photo: Sarah Johnson. Used with permission.
Figure 1 portrays an image of a near-upwards from a king reddish-banded Bumblebee on willow, Ontario. It suggests that new gut of your own Red-banded Bumblebee is actually black and there’s a general group of golden-yellow all over its segments dos and you may step three which have locations 5 being black colored.
step 3.2 Types inhabitants and you will shipment
The fresh Red-colored-banded Bumble-bee happens just in the United states. It selections out of Georgia north to Labrador, and you may west from the north You and you can Canada so you can Montana, United kingdom Columbia (BC), the fresh new Northwest Territories (NT), together with southeastern Yukon (YT) (Figure dos). Its north restrict roughly employs latitudinal treeline. Prior to suggestions regarding Alaska (elizabeth.grams., once the shown for the COSEWIC (2015)) rencontrez Danois femmes en amГ©rique were reassessed, in addition to Red-colored-banded Bumble bee has stopped being reported to be section of you to nation’s fauna (Sikes and you may Rykken 2020). Just as much as fifty-60% of its international range is during Canada (COSEWIC 2015).
area except Nunavut (NU) (COSEWIC 2015), although it could happen in the unsurveyed southwestern area of that region (Contour dos). Regarding YT it is absent to the west of the fresh Mackenzie Slopes, however it selections widely on the central section of BC (COSEWIC 2015).
Profile 2. International variety of Red-banded Bumble bee. Findings (art gallery specimens and you will photographs confirmed within the iNaturalist (2020) and you may Bumble bee Watch (2019)) since the 2009 is represented because of the navy blue dots. Northern limit away from variety uncertain, especially in central Canada. Study regarding L. Richardson and you will S. Cannings, map from the B. Fournier (Authorities away from Northwest Territories). Dataset is not comprehensive; specific specimens (e.grams. those who work in Prescott et al. 2019) weren’t included due to the fact research was received once .
Shape 2 shows the worldwide list of the fresh Reddish-banded Bumblebee. The range offers out of Georgia northern so you’re able to Labrador and you will west courtesy brand new north Us and you can Canada to Montana, United kingdom Colombia plus the Northwest Areas. It occurs in every Canadian province and you will territory except Nunavut. The observations of your varieties ranging from 1824 and you may 2008 are showed with light dots and the findings of one’s species between 2009 and 2019 is demonstrated that have navy blue dots.
The newest Yellow-banded Bumble-bee had previously been one of the most popular bumble bees off east and boreal Canada however, the variety south from the new boreal regions started to lowering of the first 1990s. Trend research was incomplete, but the finest available investigation lay reveals cousin variety (Yellow-banded Bumble bee in line with every bumble bees) on ten regional internet sites across south (sub-boreal) Canada (off 100 Distance Family, BC, and you will Edmonton east compliment of Ottawa and you can Montreal to the Atlantic Provinces) -2013 (Dining table 2 for the COSEWIC 2015). In general, new Yellow-banded Bumble bee has actually was able the broad range in spite of the refuses; the one Canadian exclusion can be extreme southwest Ontario (i.e. south and you will to the west of Kitchener-Waterloo), where in fact the variety is actually usually unusual and you may couples or no enjoys been found since the 2004 (Colla and you can Dumesh 2010; COSEWIC 2015, iNaturalist 2020).