3.step one Kinds description
He has a preliminary face and you will language length prior to very most other bumble bees. The fresh new upperside regarding much of the brand new abdomen was black colored, but there is however a unique, wide number of golden yellow locks all over places 2 and you may 3 (Contour 1). Segment 5 try black or pale yellow-brownish.
The fresh guys is actually equivalent inside along with on the female, although they normally have a lot more reddish hairs towards the face. He or she is advanced sizes anywhere between queens and you can pros, and have now apparently small antennae (COSEWIC 2015). More resources for morphology, find Williams mais aussi al. (2014).
The fresh Reddish-banded Bumble bee was earlier noticed conspecific for the Western Bumble Bee ( Bombus occidentalis) however, Bertsch et al. (2010) and you may Williams et al. (2012) advertised mitochondrial CO1 sequences sufficiently divergent to adopt both ) located consistent morphological and you will molecular emails supporting two line of kinds.
Shape step 1. Queen Red-colored-banded Bumble-bee towards the willow, Ontario. T2 and T3: Abdominal tergites 2 and you will 3. Photo: Sarah Johnson. Used in combination with consent.
Profile step one depicts a picture of a virtually-upwards away from a king red-colored-banded Bumblebee into the willow, Ontario. They implies that new instinct of one’s Purple-banded Bumblebee are black colored as there are a standard set of golden yellow round the their areas 2 and you can 3 which have markets 5 becoming black.
3.2 Species inhabitants and you can distribution
New Purple-banded Bumble-bee happen simply into the America. It ranges of Georgia north so you can Labrador, and you will western from the north Us and you can Canada so you can Montana, United kingdom Columbia (BC), the brand new Northwest Territories (NT), while the southeastern Yukon (YT) (Figure dos). The northern restrict about follows latitudinal treeline. Earlier details off Alaska (e.grams., since the shown inside COSEWIC (2015)) have now been reassessed, additionally the Purple-banded Bumble-bee has stopped being reported to be part of one to nation’s fauna (Sikes and you may Rykken 2020). As much as 50-60% of their worldwide range is within Canada (COSEWIC 2015).
territory but Nunavut (NU) (COSEWIC 2015), though it may occur on unsurveyed southwest place of this territory (Shape dos). In the YT it’s absent to the west of new Mackenzie Slopes, nevertheless ranges extensively on central section of BC (COSEWIC 2015).
Shape dos. In the world directory of Red-colored-banded Bumble bee. Observations (art gallery specimens and you will images confirmed from inside the iNaturalist (2020) and you will Bumble bee See (2019)) due to the fact 2009 was depicted because of the dark blue dots. Northern limitation out of diversity not sure, particularly in central Canada. Research regarding L. Richardson and you may S. Cannings, map by B. Fournier (Bodies regarding Northwest Territories). Dataset is not comprehensive; particular specimens (e.g. those who work in Prescott mais aussi al. 2019) just weren’t incorporated since the study is actually acquired immediately following .
Shape dos suggests the worldwide selection of the fresh Purple-banded Bumblebee. The range runs from Georgia north so you can Labrador and you can western using the fresh northern You and you may Canada so you’re able to Montana, Uk Colombia therefore the Northwest Areas. It occurs in almost any Canadian state and you can area but Nunavut. New findings of the kinds anywhere between 1824 and you may 2008 try displayed that have white dots and observations of your own species anywhere between 2009 and you may 2019 was demonstrated which have navy blue dots.
The new Purple-banded Bumble bee was once one of the most prominent bumble bees of eastern and you will boreal Canada however, the abundance south of the new boreal countries started initially to decrease in early 1990s. Trend investigation try imperfect, but the finest available analysis put suggests cousin wealth (Yellow-banded Bumble-bee prior to all bumble bees) on ten local sites round the south (sub-boreal) Canada (off 100 Distance House, BC, and you can Edmonton east because of Ottawa and you can Montreal for the Atlantic Provinces) -2013 (Dining table 2 in COSEWIC 2015). Generally speaking kissbrides.com meilleurs sites de rГ©daction de mГ©moires, the newest Red-banded Bumble-bee features maintained their broad range regardless of the declines; the only Canadian difference can be tall southwest Ontario (we.age. south and you can west of Kitchener-Waterloo), where the types is usually unusual and you may partners or no provides been discover given that 2004 (Colla and you may Dumesh 2010; COSEWIC 2015, iNaturalist 2020).