3.1 Species breakdown
He has a preliminary deal with and you can language duration relative to really most other bumble bees. The new upperside regarding much of brand new abdomen is actually black colored, but there is however a unique, wider set of golden yellow tresses around the markets 2 and you will step 3 (Figure 1). Phase 5 was black otherwise pale yellow-brown.
The fresh males is actually comparable in the colour for the ladies, despite the fact that often have a lot more red hairs into the deal with. He’s intermediate in proportions between queens and gurus, and get apparently small antennae (COSEWIC 2015). For additional info on morphology, come across Williams et al. (2014).
The Reddish-banded Bumble bee is actually earlier thought conspecific on West Bumble Bee ( Bombus occidentalis) but Bertsch ainsi que al. (2010) and you may Williams ainsi que al. (2012) stated mitochondrial CO1 sequences good enough divergent to adopt both ) receive consistent morphological and you will molecular emails help a couple of distinctive line of varieties.
Contour 1. Queen Reddish-banded Bumble bee on the willow, Ontario. T2 and T3: Abdominal tergites 2 and 3. Photo: Sarah Johnson. Used in combination with consent.
Contour 1 depicts a picture of an almost-upwards of a king red-banded Bumblebee to your willow, Ontario. They suggests that the instinct of Yellow-banded Bumblebee try black as there are a standard group of golden-yellow all over their areas 2 and you will 3 having segments 5 becoming black.
3.dos Kinds inhabitants and you will shipment
The brand new Red-banded Bumble bee happens only during the United states. It ranges out-of Georgia north so you can Labrador, and you will western from the north United states and you can Canada so you’re able to Montana, United kingdom Columbia (BC), the new Northwest Regions (NT), and the southeastern Yukon (YT) (Contour 2). Their north limitation approximately uses latitudinal treeline. Prior to details off Alaska (elizabeth.grams., due to the fact found for the COSEWIC (2015)) have now been reassessed, plus the Red-banded Bumble-bee no longer is reported to be section of one country’s fauna (Sikes and you may Rykken 2020). Around 50-60% of the around the world range is actually Canada (COSEWIC 2015).
region except Nunavut (NU) (COSEWIC 2015), though it could happen regarding the unsurveyed southwestern part of this territory (Profile dos). Regarding YT it is missing west of the fresh new Mackenzie Hills, nevertheless ranges commonly towards central part of BC (COSEWIC 2015).
Profile 2. Global list of Reddish-banded Bumble-bee. Observations (art gallery specimens and you belles femmes Irlandais will images affirmed from inside the iNaturalist (2020) and you will Bumble bee Observe (2019)) because the 2009 try illustrated from the deep blue dots. Northern limitation away from diversity uncertain, especially in main Canada. Analysis out of L. Richardson and you can S. Cannings, map because of the B. Fournier (Regulators away from Northwest Regions). Dataset isn’t total; particular specimens (e.grams. those who work in Prescott mais aussi al. 2019) just weren’t integrated given that data are received immediately following .
Figure 2 reveals the worldwide directory of the Red-banded Bumblebee. The number offers off Georgia north so you’re able to Labrador and you may western as a result of the latest northern United states and you can Canada so you’re able to Montana, Uk Colombia additionally the Northwest Territories. It happens in any Canadian state and you may area but Nunavut. The fresh new findings of your own variety ranging from 1824 and you will 2008 is actually exhibited which have white dots and findings of your own types ranging from 2009 and you will 2019 are displayed with deep blue dots.
The newest Reddish-banded Bumble-bee was once probably one of the most prominent bumble bees out-of eastern and you can boreal Canada but their abundance southern out of the fresh new boreal regions started to decline in early 1990′s. Development research was incomplete, nevertheless the better available study put suggests cousin variety (Yellow-banded Bumble-bee according to all of the bumble bees) in the ten regional internet all over southern (sub-boreal) Canada (of 100 Mile House, BC, and you may Edmonton east by way of Ottawa and you may Montreal towards the Atlantic Provinces) -2013 (Dining table dos in COSEWIC 2015). As a whole, the brand new Yellow-banded Bumble bee features maintained its wide range inspite of the refuses; the only Canadian exclusion is generally tall southwestern Ontario (we.age. south and to the west of Kitchener-Waterloo), where the variety is usually unusual and you will few if any provides started discover due to the fact 2004 (Colla and you may Dumesh 2010; COSEWIC 2015, iNaturalist 2020).
