step 3.1 Types breakdown
They have a primary face and you can tongue duration according to most other bumble bees. The fresh new upperside out of the majority of the new instinct are black, but there is exclusive, wider gang of golden-yellow locks across segments 2 and you may step three (Contour step one). Section 5 are black or pale yellow-brownish.
The fresh guys try comparable when you look at the the colour on females, although they normally have way more red hairs for the face. They are intermediate in size anywhere between queens and you may experts, and also have seemingly small antennae (COSEWIC 2015). For additional info on morphology, see Williams et al. (2014).
New Reddish-banded Bumble bee are formerly thought conspecific into West Bumble Bee ( Bombus occidentalis) however, Bertsch mais aussi al. (2010) and you may Williams mais aussi al. (2012) stated mitochondrial CO1 sequences good enough divergent to adopt the 2 ) discovered consistent morphological and you can molecular letters supporting one or two line of kinds.
Shape 1. Queen Reddish-banded Bumble bee to the willow, Ontario. T2 and you can T3: Abdominal tergites 2 and you may step three. Photo: Sarah Johnson. Used with consent.
Shape step 1 illustrates a picture of a near-up of a queen yellow-banded Bumblebee on the willow, Ontario. It shows that the fresh new gut of your Yellow-banded Bumblebee is black and there’s a general group of golden-yellow across their avenues dos and you may step 3 having markets 5 getting black colored.
3.dos Kinds population and you can delivery
The fresh Red-colored-banded Bumble-bee takes place just during the America. It selections out-of Georgia northern so you’re able to Labrador, and you may west from the northern Us and you will Canada to help you Montana, British Columbia (BC), the brand new Northwest Regions (NT), additionally the southeastern Yukon (YT) (Shape 2). Its north restriction around follows latitudinal treeline. Earlier information out-of Alaska (e.grams., just like the revealed when you look at the COSEWIC (2015)) happen reassessed, plus the Purple-banded Bumble-bee has stopped being reported to be part of that country’s fauna (Sikes and you will Rykken 2020). Just as much as fifty-60% of its international range is in Canada (COSEWIC 2015).
region but Nunavut (NU) (COSEWIC 2015), although visualisez-le it might result regarding the unsurveyed southwestern place of that area (Figure 2). On the YT it is missing west of the brand new Mackenzie Slopes, however it selections widely for the central part of BC (COSEWIC 2015).
Shape dos. In the world selection of Reddish-banded Bumble bee. Observations (museum specimens and you can pictures affirmed in the iNaturalist (2020) and you will Bumble-bee See (2019)) because 2009 is actually represented from the dark blue dots. North limit out of assortment uncertain, particularly in central Canada. Analysis regarding L. Richardson and you will S. Cannings, chart by the B. Fournier (Regulators away from Northwest Regions). Dataset isn’t full; particular specimens (elizabeth.grams. those who work in Prescott mais aussi al. 2019) were not provided while the analysis is obtained immediately following .
Contour 2 shows the worldwide a number of the latest Red-banded Bumblebee. The product range offers from Georgia north so you’re able to Labrador and you will west using the north United states and you can Canada to Montana, United kingdom Colombia additionally the Northwest Regions. It happens in just about any Canadian state and you can area except Nunavut. This new observations of species between 1824 and 2008 was displayed which have light dots additionally the findings of the kinds anywhere between 2009 and 2019 was displayed which have deep blue dots.
Brand new Red-colored-banded Bumble bee had previously been perhaps one of the most well-known bumble bees out of eastern and you will boreal Canada but its wealth southern off the newest boreal nations began to decline in early 1990s. Development studies is actually imperfect, however the finest available research set suggests relative variety (Yellow-banded Bumble-bee in line with the bumble bees) in the ten local sites around the southern area (sub-boreal) Canada (from 100 Kilometer Home, BC, and you may Edmonton east because of Ottawa and Montreal into the Atlantic Provinces) -2013 (Dining table dos in the COSEWIC 2015). Generally, the brand new Red-banded Bumble bee provides maintained their wide range inspite of the refuses; usually the one Canadian exception could be significant southwest Ontario (we.e. south and you can to the west of Kitchener-Waterloo), the spot where the kinds is actually usually unusual and couple or no has already been receive as the 2004 (Colla and you can Dumesh 2010; COSEWIC 2015, iNaturalist 2020).
