The latest Reddish-banded Bumble bee are a media-sized bumble-bee, which have queens, reproductive guys, and a smaller worker status

step 3.1 Variety description

He has an initial deal with and you can language length according to really most other bumble bees. The newest upperside off most of the newest abdomen is actually black, but there’s exclusive, wider gang of golden yellow tresses across the avenues 2 and you may step three (Profile step one). Sector 5 was black or pale yellow-brownish.

The fresh new guys is similar inside the the colour to your female, even though they often have way more red-colored hairs to the deal with. He or she is intermediate in dimensions anywhere between queens and you can gurus, and also have relatively small antennae (COSEWIC 2015). To learn more about morphology, see Williams mais aussi al. (2014).

The newest Yellow-banded Bumble bee is actually formerly believed conspecific towards the Western Bumble Bee ( Bombus occidentalis) but Bertsch ainsi que al. (2010) and you will Williams mais aussi al. (2012) said mitochondrial CO1 sequences well enough divergent to take on the two ) found consistent morphological and you can molecular characters help several distinct types.

Contour 1. Queen Yellow-banded Bumble-bee to the willow, Ontario. T2 and you may T3: Intestinal tergites 2 and you can step three. Photo: Sarah Johnson. Used in combination with consent.

Figure 1 illustrates a picture of a virtually-up out-of a king yellow-banded Bumblebee towards the willow, Ontario. It implies that this new gut of the Red-colored-banded Bumblebee was black colored and there is a broad gang of golden-yellow all over their markets dos and you may 3 that have segments 5 being black.

step three.2 Species population and you will delivery

New Purple-banded Bumble-bee occurs only from inside the The united states. They ranges regarding Georgia northern in order to Labrador, and western through the northern United states and you may Canada so you can Montana, Uk Columbia (BC), this new Northwest Regions (NT), and southeastern Yukon (YT) (Shape 2). Its north restriction roughly comes after latitudinal treeline. Before details out-of Alaska (age.grams., while the shown within the COSEWIC (2015)) have-been reassessed, together with Yellow-banded Bumble-bee no longer is considered to be section of one to state’s fauna (Sikes and you will Rykken 2020). Whenever fifty-60% of the around the world assortment is within Canada (COSEWIC 2015).

area but Nunavut (NU) (COSEWIC 2015), though it might result throughout the unsurveyed southwest corner of these territory (Profile 2). Throughout the YT it is missing to the west of the newest Mackenzie Slopes, but it selections widely for the main part of BC (COSEWIC 2015).

Figure dos. International directory of Red-colored-banded Bumble-bee. Observations (art gallery specimens and pictures affirmed inside iNaturalist (2020) and you can Bumble-bee View (2019)) because 2009 is illustrated by the deep blue dots. Northern limitation regarding assortment undecided, particularly in main Canada. Study off L. Richardson and you may S. Cannings, chart by the B. Fournier (Regulators regarding Northwest Regions). Dataset isn’t full; particular specimens (elizabeth.g. those who work in Prescott mais aussi al. 2019) just weren’t provided as the analysis was gotten just after .

Figure 2 suggests the global listing of the latest Reddish-banded Bumblebee. The number expands of Georgia north so you can Labrador and you can west because of the latest north You and you can Canada so you’re able to Montana, United kingdom Colombia in addition to Northwest Regions. It happens in any Canadian province and area except Nunavut. This new observations of your own varieties ranging from 1824 and 2008 was demonstrated that have white dots as well as the findings of your own species ranging from 2009 and 2019 is exhibited that have dark blue dots.

The new Red-colored-banded Bumble-bee was once one of the most prominent bumble bees out-of eastern and femmes Puerto Rican boreal Canada but its variety southern from new boreal nations started to lowering of the early 1990’s. Pattern data is actually incomplete, although greatest offered studies set shows cousin variety (Yellow-banded Bumble-bee prior to all of the bumble bees) in the ten regional internet all over south (sub-boreal) Canada (out of 100 Distance Family, BC, and you will Edmonton eastern by way of Ottawa and you may Montreal to your Atlantic Provinces) -2013 (Desk 2 inside COSEWIC 2015). As a whole, the Yellow-banded Bumble bee provides maintained the broad range regardless of the refuses; one Canadian exclusion are significant southwestern Ontario (i.age. southern and to the west of Kitchener-Waterloo), where in actuality the varieties is actually always unusual and you can couples if any have been receive because 2004 (Colla and Dumesh 2010; COSEWIC 2015, iNaturalist 2020).