step three.1 Kinds malfunction
They have a short face and you will tongue length in line with most most other bumble bees. The latest upperside out of most of brand new abdomen is black colored, but there’s an original, broad band of golden-yellow locks round the places dos and you can step three (Contour 1). Segment 5 is actually black otherwise pale-yellow-brown.
The new males is equivalent during the the color to the ladies, while they often have much more reddish hairs for the face. He is intermediate sizes between queens and you can gurus, and now have apparently small antennae (COSEWIC 2015). For more information on morphology, discover Williams ainsi que al. (2014).
Brand new Yellow-banded Bumble-bee is actually formerly believed conspecific to your Western Bumble Bee ( Bombus occidentalis) however, Bertsch mais aussi al. (2010) and you will Williams mais aussi al. (2012) reported mitochondrial CO1 sequences good enough divergent to look at the two ) discovered uniform morphological and you can unit letters help several collection of varieties.
Figure 1. King Purple-banded Bumble-bee for the willow, Ontario. T2 and you can T3: Abdominal tergites 2 and you can step 3. Photo: Sarah Johnson. Combined with permission.
Profile step one depicts a picture of a near-upwards regarding a queen purple-banded Bumblebee with the willow, Ontario. It implies that the abdomen of Reddish-banded Bumblebee are black and there is a general selection of golden yellow all over their locations 2 and you will step 3 that have places 5 becoming black.
3.dos Kinds society and delivery
New Reddish-banded Bumble bee takes place simply inside the America. They selections away from Georgia northern to Labrador, and west from the northern All of us and Canada to help you Montana, United kingdom Columbia (BC), brand new Northwest Areas (NT), as well as the southeastern Yukon (YT) (Profile dos). Their northern restriction around uses latitudinal treeline. Before information of Alaska (elizabeth.g., as found when you look at the COSEWIC (2015)) currently reassessed, while the Red-colored-banded Bumble-bee no longer is considered to be part of that nation’s fauna (Sikes and you can Rykken 2020). Around fifty-60% of their in the world variety is in Canada (COSEWIC 2015).
territory except Nunavut (NU) (COSEWIC 2015), though it may possibly occur about unsurveyed southwestern spot of that territory (Contour dos). In the YT it is absent to the west of the fresh Mackenzie Mountains, nevertheless ranges widely to the central section of BC (COSEWIC 2015).
Profile dos. Around the world a number of Red-banded Bumble bee. Observations (museum specimens and you can images verified for the iNaturalist (2020) and you will Bumble-bee See (2019)) as the 2009 is actually represented because of the dark blue dots. North restrict out-of diversity unsure, especially in central Canada. Studies regarding L. Richardson and you may S. Cannings, map by the B. Fournier (Bodies away from Northwest Regions). Dataset is not full; particular specimens (age.g. those who work in Prescott ainsi que al. 2019) weren’t provided because analysis try acquired once .
Figure 2 shows the worldwide variety https://kissbrides.com/fr/femmes-hongroises-chaudes/ of brand new Purple-banded Bumblebee. The number stretches off Georgia north so you can Labrador and you will western owing to the fresh new northern All of us and Canada so you’re able to Montana, United kingdom Colombia while the Northwest Regions. It occurs in almost any Canadian state and you can area except Nunavut. This new findings of your varieties anywhere between 1824 and you can 2008 was presented which have white dots plus the observations of your varieties ranging from 2009 and you can 2019 was exhibited that have dark blue dots.
The new Red-banded Bumble-bee was once perhaps one of the most popular bumble bees from eastern and you may boreal Canada however, the variety south out of this new boreal nations started initially to decline in the first 1990’s. Development studies was incomplete, nevertheless the top available investigation lay reveals cousin abundance (Yellow-banded Bumble-bee according to all of the bumble bees) during the 10 local web sites all over southern area (sub-boreal) Canada (out-of 100 Mile Household, BC, and you will Edmonton eastern courtesy Ottawa and you can Montreal with the Atlantic Provinces) -2013 (Dining table dos in the COSEWIC 2015). In general, this new Yellow-banded Bumble bee features handled the broad range in spite of the declines; one Canadian exception tends to be tall southwest Ontario (we.age. south and you will west of Kitchener-Waterloo), where types try constantly uncommon and couples if any keeps already been discovered since the 2004 (Colla and you will Dumesh 2010; COSEWIC 2015, iNaturalist 2020).