step 3.1 Variety breakdown
He’s got a short face and language duration prior to extremely other bumble bees. The fresh new upperside out of the majority of the fresh new instinct is black colored, but there’s an original, wide gang of golden-yellow tresses across the markets dos and you may step 3 (Figure 1). Phase 5 is black colored otherwise pale yellow-brownish.
This new men is actually comparable when you look at the colour with the women, even though they usually have so much more yellow hairs into deal with. They are intermediate sizes ranging from queens and you can experts, and have now apparently quick antennae (COSEWIC 2015). To learn more about morphology, see Williams mais aussi al. (2014).
This new Purple-banded Bumble-bee is actually earlier considered conspecific towards the West Bumble Bee ( Bombus occidentalis) however, Bertsch mais aussi al. (2010) and you can Williams et al. (2012) said mitochondrial CO1 sequences sufficiently divergent to consider both ) located uniform morphological and you will unit characters help one or two distinctive line of varieties.
Contour 1. Queen Reddish-banded Bumble bee on willow, Ontario. T2 and T3: Abdominal tergites dos and you will 3. Photo: Sarah Johnson. Used with permission.
Figure step 1 portrays a picture of an almost-upwards out-of a king red-colored-banded Bumblebee to your willow, Ontario. They implies that the latest gut of your Purple-banded Bumblebee is black colored as there are a general group of golden-yellow around the the areas dos and you may step 3 which have markets 5 becoming black.
step 3.dos Kinds populace and shipping
The new Red-banded Bumble-bee occurs merely during the North america. It range off Georgia north so you can Labrador, and you will west from northern You and you can Canada so you’re able to Montana, Uk Columbia (BC), the new Northwest Territories (NT), and also the southeastern Yukon (YT) (Figure dos). The north restrict more or less comes after latitudinal treeline. Earlier ideas regarding Alaska (age.grams., given that revealed inside COSEWIC (2015)) are reassessed, additionally the Red-colored-banded Bumble-bee no longer is considered to be element of you to definitely nation’s fauna (Sikes and you can Rykken 2020). Approximately fifty-60% of its internationally range is actually Canada (COSEWIC 2015).
territory but Nunavut (NU) (COSEWIC 2015), though it may occur regarding the unsurveyed southwest part of the area (Contour dos). On the YT it’s missing to the west of the brand new Mackenzie Slopes, nonetheless it range widely with the central element of BC (COSEWIC 2015).
Shape dos. In the world directory of Yellow-banded Bumble-bee. Findings (museum specimens and you may photos confirmed for the iNaturalist (2020) and you can Bumble-bee Observe (2019)) just like the 2009 was depicted by dark blue dots. North restriction of diversity unclear, especially in central Canada. Investigation off L. Richardson and you can S. Cannings, map by the B. Fournier (Authorities from Northwest Regions). Dataset isn’t full; certain specimens (age.grams. those who work in Prescott mais aussi al. 2019) were not integrated because the research try gotten just after .
Figure 2 reveals the worldwide directory of new Red-colored-banded Bumblebee. The number runs off Georgia northern to help you Labrador and you will western using the north United states and Canada in order to Montana, Uk Colombia as well as the Northwest Regions. It happens in virtually any Canadian state and you can territory but Nunavut. Brand new findings of variety ranging from 1824 and you can 2008 try exhibited which have light dots and observations of the variety between 2009 and you can 2019 is actually shown having deep blue dots.
The new Reddish-banded Bumble-bee was once one of the most popular bumble bees away from eastern and you may boreal Canada but their wealth south regarding the boreal nations began to decrease in the first 1990’s. Trend study try imperfect, however the finest readily available study put suggests relative variety (Yellow-banded Bumble bee prior to all bumble bees) at 10 regional websites across southern area (sub-boreal) Canada (of 100 Distance Home, BC, coffee meets bagel chat room and you will Edmonton eastern thanks to Ottawa and you may Montreal to the Atlantic Provinces) -2013 (Table 2 from inside the COSEWIC 2015). Generally speaking, the fresh Yellow-banded Bumble-bee keeps managed their broad range regardless of the declines; the main one Canadian exclusion could be tall southwestern Ontario (i.e. south and you will west of Kitchener-Waterloo), where the variety was usually strange and pair if any have already been discover as the 2004 (Colla and you may Dumesh 2010; COSEWIC 2015, iNaturalist 2020).