3.step 1 Variety description
He’s got a short face and you can tongue duration according to very almost every other bumble bees. New upperside away from a lot of this new gut is actually black colored, but there is an original, large band of golden yellow tresses around the locations dos and you will step three (Shape step one). Portion 5 are black colored otherwise pale yellow-brown.
The fresh new guys try equivalent within the the colour into female, despite the fact that will often have much more yellow hairs toward deal with. They are intermediate in proportions between queens and you can pros, and have now apparently short antennae (COSEWIC 2015). More resources for morphology, get a hold of Williams ainsi que al. (2014).
The fresh new Purple-banded Bumble bee is earlier noticed conspecific with the West Bumble Bee ( Bombus occidentalis) but Bertsch et al. (2010) and you may Williams et al. (2012) advertised mitochondrial CO1 sequences well enough divergent to look at the 2 ) receive uniform morphological and you can molecular emails supporting a couple of line of species.
Figure step one. Queen Red-banded Bumble-bee into willow, Ontario. T2 and T3: Intestinal tergites dos and step 3. Photo: Sarah Johnson. Combined with permission.
Profile step 1 illustrates a picture of a virtually-right up off a queen purple-banded Bumblebee to the willow, Ontario. It suggests that the new instinct of the Reddish-banded Bumblebee is black colored and there is a general selection of golden-yellow across the its locations dos and you may 3 that have places 5 being black.
step three.dos Species society and you can shipping
The latest Purple-banded Bumble-bee occurs only during the The united states. It selections out of Georgia northern so you can Labrador, and you can western from north All of us and you will Canada so you can Montana, Uk Columbia (BC), the brand new Northwest Regions (NT), and also the southeastern Yukon (YT) (Figure dos). Its north restriction about follows latitudinal treeline. Earlier ideas from Alaska (age.g., since the revealed inside the COSEWIC (2015)) have now been reassessed, in addition to Purple-banded Bumble bee has stopped being considered element of you to country’s fauna (Sikes and you will Rykken 2020). Just as much as 50-60% of their internationally assortment is actually Canada (COSEWIC 2015).
territory but Nunavut (NU) (COSEWIC 2015), although it may possibly occur regarding the unsurveyed southwest place of the region (Figure 2). On YT it is absent to the west of this new Mackenzie Hills, however it range widely into the central element of BC (COSEWIC 2015).
Figure dos. International a number of Red-colored-banded Bumble bee. Observations (art gallery specimens and you may images verified in iNaturalist (2020) and you may Bumble-bee View (2019)) just like the 2009 is actually depicted by the navy blue dots. North restriction out-of diversity undecided, particularly in main Canada. Data out of L. Richardson and you can S. Cannings, chart from the B. Fournier (Bodies of Northwest Regions). Dataset is not complete; specific specimens (e.g. those in Prescott et al. 2019) just weren’t integrated since analysis is received once .
Figure dos reveals the global a number of new Yellow-banded Bumblebee. The range extends out of Georgia north to Labrador and you may western through brand new north All of us and you can Canada so you’re able to Montana, United kingdom Colombia additionally the Northwest Areas. It happens in just about any Canadian state and you may region except Nunavut. New observations of the variety anywhere between 1824 and you will 2008 are showed that have white dots therefore the findings of species between 2009 and you can 2019 is showed which have navy blue dots.
Brand new Red-colored-banded Bumble-bee had previously been probably one of the most popular bumble bees regarding eastern and boreal Canada but its abundance south out of the newest boreal places started to decrease in the first 1990s. Development research was imperfect, nevertheless the most readily useful readily available analysis set reveals cousin variety (Yellow-banded Bumble bee relative to all the bumble bees) in the ten local internet across the southern (sub-boreal) Canada (out-of 100 Mile Family, BC, and Edmonton east courtesy Ottawa and Montreal toward Atlantic Provinces) -2013 (Dining table 2 into the COSEWIC 2015). Generally speaking, the newest Reddish-banded Bumble-bee possess maintained their broad range regardless of the refuses; one Canadian difference may be significant southwestern Ontario (we.age. south and https://kissbrides.com/fr/femmes-americaines/ you will to the west of Kitchener-Waterloo), the spot where the species try always unusual and you will partners or no has come located once the 2004 (Colla and Dumesh 2010; COSEWIC 2015, iNaturalist 2020).