step three.1 Variety malfunction
They have a short face and you will language duration relative to extremely most other bumble bees. New upperside away from most of the abdomen is black, but there’s exclusive, broad gang of golden yellow tresses round the markets dos and you will step 3 (Figure step one). Segment 5 try black otherwise pale yellow-brownish.
New men is actually comparable within the the colour for the people, while they will often have a great deal more red hairs into the face. He could be advanced in dimensions between queens and you can professionals, and have apparently quick antennae (COSEWIC 2015). For more information on morphology, come across Williams et al. (2014).
The Red-banded Bumble bee is actually previously noticed conspecific with the Western Bumble Bee ( Bombus occidentalis) however, Bertsch ainsi que al. (2010) and you can Williams ainsi que al. (2012) said mitochondrial CO1 sequences well enough divergent to adopt the 2 ) receive uniform morphological and you may molecular emails support several distinct species.
Contour 1. Queen Red-banded Bumble bee into willow, Ontario. T2 and you can T3: Abdominal tergites 2 and you may step 3. Photo: Sarah Johnson. Combined with permission.
Profile 1 illustrates an image of a virtually-right up away from a king red-banded Bumblebee on willow, Ontario. They implies that new instinct of the Yellow-banded Bumblebee is actually black colored and there is a standard group of golden yellow all over their segments dos and you can step 3 with places 5 getting black.
step 3.2 Kinds society and you can shipments
The fresh Reddish-banded Bumble bee happens simply when you look at the The united states. They range out of Georgia north so you can Labrador, and you may west from north United states and you can Canada so you’re able to Montana, British Columbia (BC), the newest Northwest Regions (NT), and southeastern Yukon (YT) femmes normales Grec (Profile 2). The northern restriction more or less uses latitudinal treeline. Prior to facts regarding Alaska (elizabeth.g., once the found in COSEWIC (2015)) being reassessed, and the Red-banded Bumble-bee has stopped being said to be part of one to state’s fauna (Sikes and you may Rykken 2020). Up to fifty-60% of their globally diversity is in Canada (COSEWIC 2015).
region except Nunavut (NU) (COSEWIC 2015), although it might occur regarding the unsurveyed southwest place of the region (Contour dos). From the YT it’s absent to the west of the Mackenzie Hills, it range generally towards the main element of BC (COSEWIC 2015).
Profile dos. Around the world a number of Purple-banded Bumble-bee. Findings (museum specimens and you will pictures affirmed in iNaturalist (2020) and Bumble bee Watch (2019)) while the 2009 are portrayed from the deep blue dots. North maximum out-of variety unclear, particularly in central Canada. Study off L. Richardson and S. Cannings, map by the B. Fournier (Authorities out of Northwest Areas). Dataset isn’t complete; some specimens (e.g. those in Prescott mais aussi al. 2019) just weren’t integrated since study is acquired shortly after .
Figure 2 shows the global selection of the Red-colored-banded Bumblebee. The range extends from Georgia north so you can Labrador and you can western using brand new north All of us and you may Canada in order to Montana, British Colombia and also the Northwest Regions. It happens in every Canadian province and you can region but Nunavut. New observations of kinds between 1824 and you can 2008 was showed with white dots as well as the findings of one’s variety between 2009 and you can 2019 was shown with navy blue dots.
Brand new Yellow-banded Bumble-bee was previously perhaps one of the most popular bumble bees away from eastern and you can boreal Canada but their wealth southern from the fresh boreal regions started initially to decrease in the first 1990’s. Pattern research was incomplete, nevertheless the most useful offered investigation put suggests cousin abundance (Yellow-banded Bumble-bee according to every bumble bees) on ten local internet round the southern area (sub-boreal) Canada (out of 100 Distance House, BC, and Edmonton eastern as a consequence of Ottawa and you can Montreal towards Atlantic Provinces) -2013 (Desk dos in COSEWIC 2015). Typically, the new Purple-banded Bumble-bee has actually handled the broad range inspite of the refuses; the main one Canadian difference is generally significant southwestern Ontario (we.e. southern and you may west of Kitchener-Waterloo), where species was usually strange and you can few or no have become discovered just like the 2004 (Colla and Dumesh 2010; COSEWIC 2015, iNaturalist 2020).
