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Bombus impatiens

Family Apidae > Genus Bombus > Bombus impatiens

Bombus impatiens 
Common Eastern Bumble Bee

In the southern two-thirds of Minnesota, Bombus impatiens is one of the most commonly observed bumble bees. New queens (gynes) establish a nest belowground at various depths, often selecting abandoned rodent or small mammal burrows. Gynes emerge from hibernation in late April or early May, typically after the emergence of the similar-looking Bombus bimaculatus (two-spotted bumble bee). Workers typically begin emerging in mid-May, males in July, and gynes in early August.

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Bombus impatiens is commercially bred for agricultural pollination and this species has been introduced outside of its range including in the Pacific Northwest. In its native range, populations are stable and expanding northward into parts of the eastern United States and southern Ontario. 

Bombus impatiens has a light yellow hairs on the thorax with a central hazy black spot (females) or more defined black spot (males). The first abdominal segment or tergite (T1) has yellow hairs, the remaining tergites have black hairs. Females have black hairs on the face and mostly black hairs vertex (back of the head or "neck") with some mixed light hairs next to the thorax. Males have yellow hairs on the face and vertex. Both males and females have medium to light brown wings. 

Bombus impatiens female

female

Nature Serve Ranking

NatureServe State Conservation Status

Bombus wing positions on flowers

Wing position on flowers

Bombus wing positions on flowers
Bombus wing positions on flowers
Bombus impatiens range map

range

size range

Bombus impatiens queen size range

QUEEN

Bombus impatiens worker size range

WORKER

Bombus impatiens male size range

MALE

Bombus impatiens phenology

activity

Species Characteristics

Bombus impatiens female

female

Hazy black spot

on thorax

Black hairs

on face

Yellow hairs on T1

Black hairs on T2-T6

Corbicula

present

Wings

medium brown

Black hairs on vertex with a few light hairs by thorax

Bombus impatiens female illustration

female

Bombus impatiens male

Yellow hairs on face

Corbicula

absent

Black hairs on T2-T7

Yellow hairs on T1

male

Yellow hairs

on vertex

Light hairs
on sternites

Bombus impatiens male illustration

male

ImpatiensGyne.jpg

female

ImpatiensMale.jpg

male

ImpatiensWorker.jpg

female

ImpatiensWorker1.jpg

female

 A Bombus impatiens female pries open a 
 Gentiana andrewsii (bottle gentian) flower. 

Similar-Looking Species

Bombus bimaculatus female

Bombus bimaculatus

Bombus vagans female

Bombus vagans

Bombus griseocollis female

Bombus griseocollis

Plant
Associations

Bombus impatiens is a medium-tongued bumble bee species that visits a wide variety of native flowering plants. Males, workers, and new gynes are abundant in late summer and early autumn visiting goldenrods and asters.

Chamaecrista.jpg

 Chamaecrista fasciculata 
 (partridge pea) 

Prenanthes.jpg

 Nabalus albus 
 (white rattlesnake-root) 

Puccoon.jpg

 Lithospermum canescens 
 (hoary puccoon) 

Chelone.jpg

 Chelone glabra 
 (white turtlehead) 

Geranium-2.jpg

 Geranium maculatum  
 (wild geranium) 

Helianthus.jpg

 Helianthus 
 (sunflowers) 

RosaBlanda-2.jpg

 Rosa blanda 
 (smooth wild rose) 

EupatoriumPerfoliatum.jpg

 Eupatorium perfoliatum 
 (common boneset) 

Verbena.jpg

 Verbena stricta 
 (hoary vervain) 

DaleaVillosa.jpg

 Dalea villosa  
 (silky prairie clover) 

Veronicastrum.jpg

 Veronicastrum virginicum 
 (Culver's root) 

Agastache.jpg

 Agastache foeniculum 
 (anise hyssop) 

Heliopsis.jpg

 Heliopsis helianthoides 
 (smooth oxeye) 

LiatrisAspera.jpg

 Liatris aspera 
 (rough blazing star) 

Oenothera-2.jpg

 Oenothera rhombipetala 
 (fourpoint evening primrose) 

physostegia.jpg

 Physostegia virginiana 
 (obedient plant) 

Cephalanthus.jpg

 Cephalanthus occidentalis 
 (buttonbush) 

solidagospeciosa.jpg

 Solidago speciosa 
 (showy goldenrod) 

gentiana.jpg

 Gentiana andrewsii 
 (bottle gentian) 

Pycnanthemum.jpg

 Pycnanthemum virginianum  
 (Virginia mountain mint) 

Asclepias.jpg

 Asclepias tuberosa 
 (butterfly milkweed) 

blephilia.jpg

 Blephilia hirsuta 
 (hairy woodmint) 

diervilla.jpg

 Diervilla lonicera 
 (bush honeysuckle) 

PenstemonGrand.jpg

 Penstemon grandiflorus 
 (large beardtongue) 

Staphylea.jpg

 Staphylea trifolia 
 (American bladdernut) 

lobelia.jpg

 Lobelia siphilitica 
 (blue lobelia) 

MonardaPunctata.jpg

 Monarda punctata 
 (dotted horsemint) 

eutrochiumpurpureum.jpg

 Eutrochium purpureum 
 (sweet Joe Pye weed) 

Lupinus.jpg

 Lupinus perennis 
 (wild lupine) 

CirsiumDiscolor.jpg

 Cirsium discolor 
 (pasture thistle) 

Helenium.jpg

 Helenium autumnale 
 (sneezeweed) 

Vernonia.jpg

 Vernonia fasciculata 
 (common ironweed) 

AlliumCernuum.jpg

 Allium cernuum 
 (nodding onion) 

Symphyotrichum-2.jpg

 Symphyotrichum, Eurybia 
 (asters) 

silphium-2.jpg

 Silphium 
 (cup plant, prairie dock) 

Hydrophyllum.jpg

 Hydrophyllum virginianum 
 (Virginia waterleaf) 

MonardaFistulosa.jpg

 Monarda fistulosa 
 (wild bergamot) 

Scrophularia.jpg

 Scrophularia lanceolata 
 (lance-leaved figwort) 

impatiensaster.jpg
impatiensmonarda.jpg

External Links

Bombus Species in Minnesota

Scientific Name
Host
Sociality
Nest
Bombus affinis
eusocial
belowground
Bombus ashtoni (B. bohemicus)
Bombus (Gibbs 2023) - SH rank: possibly extirpated from state
parasitic
Bombus auricomus
eusocial
aboveground
Bombus bimaculatus
eusocial
below- and aboveground
Bombus borealis
eusocial
belowground
Bombus citrinus
Bombus bimaculatus, B. impatiens, B. vagans (Gibbs 2023)
parasitic
Bombus fervidus
eusocial
aboveground
Bombus flavidus (B. fernalde)
Bombus
parasitic
Bombus fraternus
eusocial
belowground
Bombus frigidus
eusocial
Bombus griseocollis
eusocial
below- and aboveground
Bombus huntii
eusocial
Bombus impatiens
eusocial
belowground
Bombus insularis
Bombus ternarius (Williams et al. 2014)
parasitic
Bombus melanopygus
eusocial
Bombus nevadensis
eusocial
Bombus pensylvanicus
eusocial
aboveground
Bombus perplexus
eusocial
belowground
Bombus rufocinctus
eusocial
aboveground
Bombus sandersoni
eusocial
Bombus suckleyi
Bombus - SX rank: presumed extirpated from state
parasitic
Bombus ternarius
eusocial
belowground
Bombus terricola
eusocial
belowground
Bombus vagans
eusocial
below- and aboveground
Bombus variabilis
B. pensylvanicus. B. variabilis rank SX: presumed extirpated from state
parasitic

Source: Minnesota Department of Natural Resources, Minnesota Bee Species List (August 2023). 
https://files.dnr.state.mn.us/eco/mcbs/mn-statewide-bee-list.pdf

Bombus pensylvanicus female

Guide to Minnesota Bumble Bees

Download the two-page guide to Minnesota bumble bees:

University of MN Extension
Minnesota Bumble Bee Guide females
Bumble Bee Field Guide

Distribution

Bombus affinis range map

Bombus affinis

Bombus ashtoni range map

Bombus ashtoni (bohemicus)

Bombus auricomus range map

Bombus auricomus

Bombus affinis
Bombus auricomus
Bombus bimaculatus range map

Bombus bimaculatus

Bombus bimaculatus
Bombus borealis range map

Bombus borealis

Bombus citrinus range map

Bombus citrinus

Bombus fervidus range map

Bombus fervidus

Bombus flavidus range map

Bombus flavidus

Bombus borealis
Bombus citrinus
Bombus fervidus
Bombus fraternus range map

Bombus fraternus

Bombus frigidus range map

Bombus frigidus

Bombus griseocollis range map

Bombus griseocollis

Bombus huntii range map

Bombus huntii

Bombus griseocollis
Bombus impatiens range map

Bombus impatiens

Bombus insularis range map

Bombus insularis

Bombus melanopygus range map

Bombus melanopygus

Bombus nevadensis range map

Bombus nevadensis

Bombus impatiens
Bombus pensylvanicus range map

Bombus pensylvanicus

Bombus perplexus range map

Bombus perplexus

Bombus rufocinctus range map

Bombus rufocinctus

Bombus sandersoni range map

Bombus sandersoni

Bombus rufocinctus
pensylvanicus1female.jpg
Bombus suckleyi range map

Bombus suckleyi

Bombus ternarius range map

Bombus ternarius

Bombus terricola range map

Bombus terricola

Bombus vagans range map

Bombus vagans

Bombus ternarius
vagansfemale.jpg
terricolafemale.jpg

Bombus Annual Nest Cycle

Bombus nest cycle

Gynes emerge from hibernation.

Workers emerge from nest and collect pollen and nectar.

Gynes establish nest and collect pollen and nectar from flowers. 

Gynes search for a nest site.

Males begin emerging. 

Some males

establish
territories.

New gynes emerge from nest and visit flowers to sequester fat.

New gynes mate
with a male.

New gynes excavate a
shallow hibernation burrow.

NEST ESTABLISHED

NEST ENDS

Males, workers, and queen perish.

Participatory Science Opportunities

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UMN Nest Quest logo
Minnesota Bumble Bee Atlas logo
UMN Native Bee Atlas Logo

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Citations and Further Reading

Droege, S., Shumar, S., & Maffei, C. (2024). The Very Handy Bee Manual (2.0). Zenodo. https://doi.org/10.5281/zenodo.12812755

Gibbs, J., Hanuschuk, E., Miller, R., Dubois, M., Martini, M., Robinson, S., ... & Onuferko, T. M. (2023). A checklist of the bees (Hymenoptera: Apoidea) of Manitoba, Canada. The Canadian Entomologist, 155, e3.

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Mitchell, T. B. (1960). Bees of the eastern United States. Technical Bulletin No. 141. North Carolina Agricultural Experiment Station.

Portman, Z. M., Gardner, J., Lane, I. G., Gerjets, N., Petersen, J. D., Ascher, J. S., ... & Cariveau, D. P. (2023). A checklist of the bees (Hymenoptera: Apoidea) of Minnesota. Zootaxa, 5304(1), 1-95.

Williams, P. H., Thorp, R. W., Richardson, L. L., & Colla, S. R. (2014). Bumble bees of North America: an identification guide. Princeton University Press


Wilson, J. S., & Messinger Carril, O. J. (2016). The bees in your backyard: a guide to North America's bees. Princeton University Press.

Page Photography Credits

Heather Holm
Steve Mlodinow CC BY-NC 4.0 (Brachymelecta)
Michelle Orcutt
CC-BY-NC 4.0 (Epimelissodes female)

Page Illustration Credits

Elaine Evans, Xerces Society - bumble bee illustrations

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