step three.1 Types breakdown
He has got a preliminary face and you can tongue length relative to most almost every other bumble bees. The newest upperside from most of the abdomen is black colored, but there is however an original, large number of golden-yellow hair around the segments dos and you can step three (Contour step one). Phase 5 try black or pale-yellow-brownish.
This new guys is equivalent during the colour into the females, while they usually have far more reddish hairs to the face. He is advanced in size anywhere between queens and experts, and then have seemingly small antennae (COSEWIC 2015). More resources for morphology, see Williams ainsi que al. (2014).
The latest Reddish-banded Bumble-bee are previously felt conspecific on the Western Bumble Bee ( Bombus occidentalis) however, Bertsch ainsi que al. (2010) and you may Williams mais aussi al. (2012) said mitochondrial CO1 sequences good enough divergent to consider the 2 ) discover consistent morphological and you can unit letters help a couple of line of types.
Shape step one. Queen Red-colored-banded Bumble bee towards the willow, Ontario. T2 and you will T3: Intestinal tergites 2 and you will step 3. Photo: Sarah Johnson. Combined with consent.
Contour step 1 depicts a picture of a virtually-up out of a king purple-banded Bumblebee towards willow, Ontario. They implies that new gut of the Purple-banded Bumblebee is actually black colored and there’s a standard group of golden yellow round the the locations 2 and step 3 that have markets 5 being black.
step 3.dos Kinds population and you may delivery
The Reddish-banded Bumble bee happen merely in the United states. It selections off Georgia north to help you Labrador, and you will western through the north You and you may Canada to help you Montana, United kingdom Columbia (BC), the new Northwest Regions (NT), as well as the southeastern Yukon (YT) (Figure dos). The northern restrict more or less pursue latitudinal treeline. Earlier details from Alaska (elizabeth.grams., since the found within the COSEWIC (2015)) currently reassessed, while the Red-banded Bumble-bee is no longer said to be element of one to nation’s fauna (Sikes and you will Rykken 2020). Everything fifty-60% of their worldwide range is in Canada (COSEWIC 2015).
territory but Nunavut (NU) (COSEWIC 2015), though it could happen regarding unsurveyed southwestern part of that area (Shape dos). Regarding the YT it’s missing to the west of the newest Mackenzie Slopes, nevertheless selections generally to your central element of BC (COSEWIC 2015).
Contour dos. In the world range of Yellow-banded Bumble-bee. Findings (museum specimens and you will images confirmed inside iNaturalist (2020) and Bumble bee View (2019)) due to the fact 2009 is actually illustrated of the dark blue dots. Northern limit out-of diversity unsure, particularly in main Canada. Investigation regarding L. Richardson and you can S. Cannings, chart of the B. Fournier (Bodies away from Northwest Territories). Dataset isn’t comprehensive; some specimens (elizabeth.g. those who work in Prescott et al. 2019) just weren’t provided because analysis are obtained once .
Shape 2 reveals the global selection of the latest Yellow-banded Bumblebee. The number runs from Georgia northern to Labrador and you will west as a consequence of the new northern United states and you may Canada so you’re able to Montana, United kingdom Colombia additionally the Northwest Areas. It happens in just about any Canadian state and territory except Nunavut. The findings of your types ranging from 1824 and you may 2008 try presented with white dots in https://kissbrides.com/fr/femmes-baltes-chaudes/ addition to observations of your own species between 2009 and you will 2019 is exhibited having navy blue dots.
This new Reddish-banded Bumble bee used to be probably one of the most popular bumble bees away from east and you may boreal Canada but its variety southern out of the boreal places started initially to decline in the first 90s. Development study try incomplete, nevertheless most useful readily available analysis lay reveals relative abundance (Yellow-banded Bumble-bee in line with all bumble bees) during the ten regional websites across south (sub-boreal) Canada (of 100 Mile Domestic, BC, and Edmonton east using Ottawa and you may Montreal to your Atlantic Provinces) -2013 (Dining table dos inside the COSEWIC 2015). Typically, the brand new Reddish-banded Bumble bee keeps was able their broad range despite the declines; one Canadian exemption can be high southwest Ontario (we.elizabeth. south and you can to the west of Kitchener-Waterloo), the spot where the variety try usually unusual and you may few or no provides already been discover because the 2004 (Colla and you may Dumesh 2010; COSEWIC 2015, iNaturalist 2020).