step three.1 Kinds description
They have a short deal with and you may tongue size in accordance with extremely other bumble bees. The latest upperside of most of the brand new instinct try black colored, but there is an original, greater band of golden yellow hair around the markets dos and you will step 3 (Contour 1). Sector 5 is black colored otherwise pale-yellow-brownish.
The latest guys are similar during the along with toward female, while they normally have more red hairs into face. He’s intermediate sizes ranging from queens and pros, and have now relatively small antennae (COSEWIC 2015). For more information on morphology, select Williams ainsi que al. (2014).
The newest Purple-banded Bumble bee is actually formerly felt conspecific towards West Bumble Bee ( Bombus occidentalis) however, Bertsch ainsi que al. (2010) and you may Williams ainsi que al. (2012) said mitochondrial CO1 sequences well enough divergent to consider the two ) found consistent morphological and you will molecular characters supporting a couple of distinctive line of varieties.
Figure step one. King Reddish-banded Bumble-bee toward willow, Ontario. T2 and you will T3: Abdominal tergites 2 and you will step 3. Photo: Sarah Johnson. Used with permission.
Shape step 1 illustrates a picture of a close-upwards regarding a king purple-banded Bumblebee towards the willow, Ontario. It means that the latest gut of Red-colored-banded Bumblebee try black colored and there is a standard group of golden yellow round the their areas dos and you can step 3 which have markets 5 getting black.
3.2 Kinds population and delivery
Brand new Red-banded Bumble-bee happens only in United states. They ranges off Georgia north so you can Labrador, and you can west from northern United states and you may Canada in order to Montana, British Columbia (BC), the fresh Northwest Territories (NT), as well as the southeastern Yukon (YT) (Figure 2). The northern maximum around employs latitudinal treeline. Earlier ideas off Alaska (elizabeth.g., because the found into the COSEWIC (2015)) being reassessed, additionally the Yellow-banded Bumble bee no longer is reported to be element of you to definitely nation’s fauna (Sikes and you can Rykken 2020). Just as much as 50-60% of its worldwide variety is actually Canada (COSEWIC 2015).
area but Nunavut (NU) (COSEWIC 2015), although it could happen on unsurveyed southwest area of these territory (Profile dos). About YT it’s missing west of new Mackenzie Mountains, nevertheless selections generally to the central part of BC (COSEWIC 2015).
Figure dos. Around the world directory of Red-banded Bumble bee. https://kissbrides.com/fr/epouses-ethiopiennes/ Observations (art gallery specimens and you will pictures affirmed into the iNaturalist (2020) and you will Bumble bee Check out (2019)) once the 2009 are portrayed by the navy blue dots. North restrict off assortment unclear, particularly in main Canada. Data away from L. Richardson and you can S. Cannings, map of the B. Fournier (Regulators away from Northwest Territories). Dataset isn’t total; specific specimens (e.g. those in Prescott mais aussi al. 2019) just weren’t provided as data is gotten immediately following .
Contour dos shows the global a number of this new Reddish-banded Bumblebee. The number expands off Georgia north to help you Labrador and you can west because of new north Us and Canada so you can Montana, United kingdom Colombia therefore the Northwest Territories. It happens in just about any Canadian province and region but Nunavut. The newest findings of the varieties anywhere between 1824 and you may 2008 are showed having light dots additionally the findings of the variety ranging from 2009 and you may 2019 was displayed which have dark blue dots.
The Yellow-banded Bumble-bee was previously one of the most well-known bumble bees out of east and you will boreal Canada however, the variety southern off the newest boreal regions started initially to decrease in the early 90s. Pattern data was imperfect, but the greatest available studies lay shows relative abundance (Yellow-banded Bumble-bee prior to all of the bumble bees) from the ten regional internet round the southern (sub-boreal) Canada (of 100 Kilometer Home, BC, and you may Edmonton east as a result of Ottawa and Montreal with the Atlantic Provinces) -2013 (Table 2 for the COSEWIC 2015). Overall, this new Yellow-banded Bumble-bee has managed its broad range regardless of the refuses; the one Canadian difference is extreme southwestern Ontario (i.elizabeth. southern area and you may to the west of Kitchener-Waterloo), where types is always strange and you will couples if any has been found as the 2004 (Colla and Dumesh 2010; COSEWIC 2015, iNaturalist 2020).