step three.1 Kinds description
He’s a short deal with and you can language length in line with very most other bumble bees. The upperside away from the majority of the gut try black colored, but there is however a distinctive, wide set of golden-yellow hair across avenues dos and you may step 3 (Figure step one). Section 5 try black colored or pale yellow-brownish.
Brand new males are equivalent inside the along with into the female, even though they will often have a lot more purple hairs for the face. He or she is advanced sizes between queens and you will experts, and have seemingly small antennae (COSEWIC 2015). More resources for morphology, find Williams et al. (2014).
The newest Purple-banded Bumble bee is actually earlier believed conspecific with the West Bumble Bee ( Bombus occidentalis) however, Bertsch mais aussi al. (2010) and you can Williams mais aussi al. (2012) reported mitochondrial CO1 sequences sufficiently divergent to consider both ) receive uniform morphological and you can unit emails help one or two type of kinds.
Shape 1. Queen Red-banded Bumble-bee to your willow, Ontario. T2 and you can T3: Abdominal tergites dos and you will 3. Photo: Sarah Johnson. Used in combination with consent.
Shape 1 depicts an image of an almost-up out-of a queen red-colored-banded Bumblebee toward willow, Ontario. They means that this new abdomen of your own Reddish-banded Bumblebee is black colored as there are a broad band of golden yellow all over their avenues 2 and you can 3 having markets 5 becoming black colored.
3.dos Variety people and you may shipments
The brand new Red-colored-banded Bumble bee happens simply when you look at the The united states. They ranges off Georgia northern to help you Labrador, and western from north All of us and Canada so you’re able to Montana, British Columbia (BC), the new Northwest Regions (NT), and also the southeastern Yukon (YT) (Contour dos). The northern limit roughly observe latitudinal treeline. Prior to details regarding Alaska (e.g., because shown in the COSEWIC (2015)) currently reassessed, together with Red-banded Bumble bee has stopped being reported to be section of you to definitely state’s fauna (Sikes and you may Rykken 2020). Everything 50-60% of the global range is actually Canada (COSEWIC 2015).
region except Nunavut (NU) (COSEWIC 2015), though it might result on the unsurveyed southwest place of that region (Contour 2). About YT it is missing west of the fresh new Mackenzie Mountains, nonetheless it ranges generally with the main element of BC (COSEWIC 2015).
Figure dos. Worldwide list of Purple-banded Bumble bee. Findings (museum specimens and you may photo confirmed inside the iNaturalist (2020) and you can Bumble bee Check out (2019)) once the 2009 was portrayed by the dark blue dots. Northern restriction regarding range undecided, especially in central Canada. Investigation away from L. Richardson and you can S. Cannings, chart by the B. Fournier (Government regarding Northwest Regions). Dataset isn’t complete; specific specimens (age.grams. those in Prescott mais aussi al. 2019) were not included as analysis is actually gotten immediately following .
Figure dos shows the worldwide set of the brand new Yellow-banded Bumblebee. The number stretches out of Georgia north so you can Labrador and you will west using the newest north You and you will Canada to Montana, United kingdom Colombia together with Northwest Territories. It happens in almost any Canadian province and territory but Nunavut. The new observations of variety between 1824 and 2008 are displayed with light dots while the findings of kinds between 2009 and you will 2019 are showed with deep blue dots.
New Purple-banded Bumble-bee https://brightwomen.net/fr/femmes-georgiennes/ had previously been probably one of the most well-known bumble bees off east and you can boreal Canada however, its wealth southern off the newest boreal places started initially to reduction in the early 1990s. Development investigation is actually incomplete, nevertheless finest offered investigation place suggests relative abundance (Yellow-banded Bumble bee relative to all the bumble bees) in the 10 local internet sites all over south (sub-boreal) Canada (of 100 Distance Home, BC, and you may Edmonton east as a result of Ottawa and you will Montreal into the Atlantic Provinces) -2013 (Dining table 2 in COSEWIC 2015). Typically, the newest Yellow-banded Bumble bee enjoys handled its wide range despite the refuses; usually the one Canadian exception is generally high southwestern Ontario (i.elizabeth. south and to the west of Kitchener-Waterloo), in which the varieties is always strange and pair or no provides been discovered as 2004 (Colla and you may Dumesh 2010; COSEWIC 2015, iNaturalist 2020).
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