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Bombus vagans Smith, 1854
Bombus consimilis Cresson, 1864; Bremus vagans (Smith, 1854); Bremus vagans var coctus Bequaert and Plath, 1925; Bremus vagans var helenae Frison, 1929; Bombus (Bombus) bolsteri Franklin, 1913; Bombus (Pyrobombus) vagans bolsteri Franklin, 1913, valid subspecies

Life   Insecta   Hymenoptera   Apoidea   Apidae   Bombus
Subgenus: Pyrobombus

Bombus vagans FEM comp
© Copyright Laurence Packer 2014 · 7
Bombus vagans FEM comp

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Bombus vagans MALE comp
© Copyright Laurence Packer 2014 · 7
Bombus vagans MALE comp
Bombus vagans, m, face, Centre Co., PA ---.
© Copyright source/photographer · 5
Bombus vagans, m, face, Centre Co., PA ---.

Bombus vagans, M, Face, NY, Franklin ---.
© Copyright source/photographer · 5
Bombus vagans, M, Face, NY, Franklin ---.
Bombus vagans, m, right side, Centre Co., PA ---.
© Copyright source/photographer · 5
Bombus vagans, m, right side, Centre Co., PA ---.

Bombus vagans, m, back, Centre Co., PA ---.
© Copyright source/photographer · 5
Bombus vagans, m, back, Centre Co., PA ---.
Bombus vagans, Half-black Bumble Bee
© Copyright John Ascher, 2006-2014 · 4
Bombus vagans, Half-black Bumble Bee

Bombus vagans, Barcode of Life Data Systems
Barcode of Life Data Systems · 1
Bombus vagans, Barcode of Life Data Systems
Bombus vagans, 227474, male, dorsum
© USDA Bee Biology and Systematics Laboratory, Logan Utah · 1
Bombus vagans, 227474, male, dorsum

Bombus vagans, 227474, male, face
© USDA Bee Biology and Systematics Laboratory, Logan Utah · 1
Bombus vagans, 227474, male, face
Bombus vagans, 227474, male, malarspace
© USDA Bee Biology and Systematics Laboratory, Logan Utah · 1
Bombus vagans, 227474, male, malarspace

Bombus vagans, 240525, female, dorsum
© USDA Bee Biology and Systematics Laboratory, Logan Utah · 1
Bombus vagans, 240525, female, dorsum
Bombus vagans, 240525, female, face
© USDA Bee Biology and Systematics Laboratory, Logan Utah · 1
Bombus vagans, 240525, female, face

Bombus vagans, 240525, female, malarspace
© USDA Bee Biology and Systematics Laboratory, Logan Utah · 1
Bombus vagans, 240525, female, malarspace
UGCA195781 01.queen_front.320.jpg
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Overview
Reprinted with permission from: Mitchell, T.B. 1962 Bees of the Eastern United States. North Carolina Agricultural Experiment Station Technical Bulletin No. 152.

QUEEN有ength 14.5-19 mm., breadth of abdomen 6-8.5 mm.; black, legs often somewhat reddened, mid and hind spurs and tegulae reddish-piceous; wings very lightly and rather uniformly infuscated, veins brownish to piceous; pubescence copious and rather elongate, largely black on head, but with a dense tuft yellowish hairs on vertex medially and a few pale hairs beneath the more elongate black pubescence around antennae; thorax almost entirely yellow pubescent, but median posterior area of scutum bare and somewhat shining, more or less fringed with obscure black hairs; pubescence of legs largely black, somewhat intermixed with greyish on front femora, pubescence short and largely dark on front tibiae, much more elongate posteriorly and entirely dark on mid tibiae; corbicular fringe on hind legs of elongate black hairs, and hind basitarsi rather densely covered with very minute, yellowish, pruinose hairs that not hide the surface; abdominal terga 1 and 2 yellow pubescent, that on 2 becoming narrowly blackish apically in many specimens, entirely black on 3-6; clypeus smooth and shining, with only a narrow band of close punctures along lateral and upper margins, with only very minute and sparse punctures otherwise; labrum with a very low, basal ridge which is quite broadly interrupted medially, this area concave, with margin somewhat elevated above that on each side, surface smooth and shining on each side, with only a few scattered punctures, the median concave area finely rugose or subpunctate, apical margin fringed with rather short ochraceous hairs; apex of mandible with a pair of rather deep notches toward the upper angle, otherwise broadly rounded, outer face rather smooth, somewhat shining, with exceedingly minute, obscure punctures; malar space smooth and shining, without distinct punctures, its median length slightly greater than basal width of mandible; median area of face very finely and closely punctate, punctures becoming more deep, distinct and rather sparse below ocelli, space between lateral ocelli and eyes shining and impunctate; punctures of vertex minute, close laterally, densely crowded medially; lateral ocelli slightly nearer eyes than to margin of vertex, somewhat more distinct from each other; antennal scape somewhat more than half total length of flagellum, basal segment of flagellum longer than 2 or 3, but somewhat shorter than the two combined; median width of hind basitarsus nearly equal to half the length, apex slightly narrower; tergum 6 rather smooth but dull, punctures exceedingly minute but rather close, with rather copious but short, fine pubescence, narrowly rounded apically.

WORKER有ength 6-15.5 mm., breadth of abdomen 3.5-6.5 mm.; very similar to queen except in size; often with median posterior area of scutum more copiously black pubescent.

MALE有ength 11-13 mm., breadth of abdomen 4.5-5.5 mm.; pubescence long and copious, in large part yellow on head, especially on face below antennae, on vertex medially and cheeks posteriorly, with intermixed, long, black hairs along inner orbits, around and above antennae, behind ocelli, on cheeks above and along posterior orbits; center of scutum somewhat bare, fringed with elongate, black hairs, with a few black hairs intermixed with the yellow toward the lateral margins; thorax otherwise entirely bright yellow pubescent; legs largely yellow pubescent basally, hairs long and quite copious, tibiae with somewhat shorter, black pubescence on outer face, fringed with pale hairs more or less intermixed with black, the mid and hind basitarsi with brownish-ochraceous pubescence beneath, largely bare on exterior surface, fringed with ochraceous hairs; hind tibiae quite slender, outer surface shining but convex, with sparse punctures, fringed with dark hairs anteriorly, and with more elongate, pale hairs, intermixed with dark, posteriorly; abdominal terga 1 and 2 with copious and elongate yellow pubescence, following terga black, but with some intermixed yellowish hairs on the more apical segments, and margins with more or less evident yellowish pubescence; clypeus with fine and close but quite distinct punctures beneath dense pubescence; labrum rather broadly truncate, smooth and shining, with only minute, scattered and rather obscure punctures; mandibles slender, bi-dentate apically, densely covered with ochraceous pubescence on outer face, this forming an elongate, somewhat curled fringe beneath; malar space smooth and shining, with only very vague and obscure punctures, length somewhat greater than basal width of mandible, about one-fourth length of eye; median area of face beneath the dense pubescence very finely and closely punctate, the punctures becoming distinct and quite sparse above toward ocelli, space between ocelli and eyes shining and impunctate, vertex medially with deep and distinct but quite close punctures, becoming somewhat more irregular but still close laterally; lateral ocelli subequally distant from eyes, margin of vertex and each other; basal segment of flagellum very slightly longer than segment 2, and very slightly shorter than segment 3; median width of hind basitarsus slightly less than one-third the length; sterna 7 and 8 and genital armature as in impatiens (fig. 133).

DiSTRIBUTiON涌ntario to Nova Scotia, south to Georgia, June to August.

FLOWER RECORDS輸selepias, Aster, .4 zalea, B etula, Cirsiurn, Eupatorium, Helianthus, Hydrangea, Mains, Pentstemon, Rubus, Solidago, Spirea and Vaccinium. Robertson (1929) records vagans on Actmorn e ris, A gastache, Am phicarpa, Arctium, Asciepias, Aster, Blephilia, Cassia, Cercis, Cirsium, Claytonia, Clematis, Delphinium, Dicentra, Ellisia, Erigenia, Eupatorium, G erani置m, Gera rdia, Helianthus, .flydrophyllum, Hypericurn, Ipomoea, LiaIris, Linaria, Lobelia, Maiva, Mertensia, Mimuins, Monarda, Nepta, Pentstemon. Phlox, Physostegia, Polygonatum, Polyrn onium, Pi地n ella, Rihes, Scrophularia, Scutellaria, Seym eria, Silphium, Solidago, Stachys, Staphylea, Symphoricarpus, Teueiiurn, Tradescantia, Trifolium, Trios tewm, Verbascum, Verbena, Veronica, Viola and Zizia. Brittain and Newton record vagans on the following: Caragana, Daucus, Narcissus, Phleum, Pinus, Prunus, Pyrus, Salix, Spiraea, Tara.xacvm, Tulipa, and Vaccinium.


Reprinted from: LaBerge, W.E., and Webb, M.C. 1962. The Bumblebees of Nebraska. University of Nebraska College of Agriculture-Agricultural Experiment Station, Research Bulletin No. 205

The range of this eastern species of Bombus barely enters the eastern part of Nebraska. There it can be locally relatively common. One record of a queen from Sioux County (no other data available) is probably in error.

Females: Head hairs chiefly black, vertex with yellow medially and a few pale hairs near antennal fossae; thorax with sides with hairs yellow, dorsum entirely yellow or mesoscutum with small posteromedian patch of black hairs; tergum 1 with pile yellow; tergum 2 with pile yellow entirely or yellow basally and black apically, often yellow pile is on brownish side of yellow; terga 3-6 with pile black; leg hairs black; malar space decidedly longer than broad, facial outline elongate; ocelli placed on supraorbital line.

Males: Head hairs chiefly yellow, space between apices of compound eyes and along margins of compound eyes often with black hairs; thorax with hairs entirely yellow except often mesoscutum with small posteromedian patch of black hairs; terga 1 and 2 with pile yellow, occasionally tergum 2 with apical hairs black; terga 3-7 with pile black; leg hairs black except often trochanters, coxae and lower surfaces of femora with hairs yellow; tibiae with outer surfaces with few punctures and hairs; malar space decidedly longer than broad, head elongate; compound eyes not swollen; ocelli placed on supraorbital line; first flagellar segment shorter than third, slightly longer than second.

Locality Records. (Fig. 11) CASS: Louisville, South Bend, Weeping Water. CUMING: West Point. DOUGLAS: Omaha. LANCASTER: Lincoln. SARPY: Childs Point, Meadow. SAUNDERS: Ashland, Cedar Bluffs. SIOUX: ?Sioux Co.?

Dates Collected. Queens have been taken in Nebraska from May 17 (South Bend) until July 27 (Omaha), but chiefly in May and June. Workers have been taken from July 20 (Weeping Water) until September 19 (West Point), but chiefly in August. Males have been taken from July 22 (Omaha) until September 19 (West Point), but chiefly in August and September.


Names
Scientific source:

Supported by

Hosts · map
FamilyScientific name @ source (records)
Apiaceae  Sanicula marilandica @ AMNH_BEE (1)
Apocynaceae  Asclepias syriaca @ UCMS_ENT (4)
Asteraceae  Arctium minus @ AMNH_BEE (1)

Aster simplex @ AMNH_BEE (3)

Aster @ AMNH_BEE (6)

Bidens frondosa @ AMNH_BEE (1)

Cichorium intybus @ PN- (1)

Cirsium arvense @ BBSL__JPS (1)

Cirsium discolor @ UCMS_ENT (3)

Cirsium sp @ UCMS_ENT (1); BBSL__JPS (5)

Cirsium undulatum @ AMNH_BEE (11)

Eupatorium perfoliatum @ AMNH_BEE (3)

Helianthus annuus @ AMNH_BEE (3)

Helianthus tuberosus @ AMNH_BEE (2)

Hypochaeris radicata @ UCMS_ENT (1)

Lactuca @ AMNH_BEE (1)

Rudbeckia laciniata @ AMNH_BEE (2)

Solidago @ AMNH_BEE (3)

Sonchus arvensis @ AMNH_BEE (1)

Symphyotrichum ericoides @ AMNH_BEE (1)

Symphyotrichum lanceolatum @ AMNH_BEE (2)

Taraxacum officinale @ AMNH_BEE (1)
Balsaminaceae  Impatiens capensis @ AMNH_BEE (9)
Boraginaceae  Cynoglossum officinale @ BBSL (1)

Hydrophyllum virginianum @ AMNH_BEE (3)
Brassicaceae  Raphanus raphanistrum @ UCMS_ENT (2)
Convolvulaceae  Convolvulus arvensis @ PN- (1)
Cucurbitaceae  Cucurbita sp @ UCMS_ENT (2)
Ericaceae  Rhododendron @ AMNH_BEE (18)

Vaccinium macrocarpon @ RUAC_ENT (2)
Fabaceae  Thermopsis rhombifolia @ AMNH_BEE (1)

Trifolium pratense @ MLSB__N16- (1); AMNH_BEE (4); UCMS_ENT (2); PN- (4)

Trifolium repens @ BBSL__BBSLID (1); AMNH_BEE (1); BBSL (3)

Trifolium @ AMNH_BEE (8)

Vicia sp @ UCMS_ENT (1)
J. rykken  832 @ JRYB__SHEN (1)
K. kingsley  1058 @ JRYB__SHEN (1)

1062 @ JRYB__SHEN (1)

3199 @ JRYB__SHEN (1)

3528 @ JRYB__SHEN (1)
Lamiaceae  Agastache foeniculum @ AMNH_BEE (2)

Monarda fistulosa @ AMNH_BEE (1); BBSL (18)

Nepeta @ AMNH_BEE (1)

Physostegia parviflora @ AMNH_BEE (1)

Prunella vulgaris @ PN- (1)

Stachys palustris @ AMNH_BEE (1)

Teucrium canadense @ UCMS_ENT (1)
Malvaceae  Alcea @ AMNH_BEE (1)
N. rice  1031 @ JRYB__SHEN (1)
Onagraceae  Epilobium angustifolium @ AMNH_BEE (1)
Plantaginaceae  Linaria vulgaris @ AMNH_BEE (1)
Pontederiaceae  Pontederia cordata @ AMNH_BEE (1)
Ranunculaceae  Ranunculus sp @ BBSL__BBSLID (2)
Rosaceae  Rosa @ AMNH_BEE (1)

Rubus strigosus @ AMNH_BEE (3)
Sapindaceae  Acer spicatum @ UCMS_ENT (1)

Aesculus hippocastanum @ AMNH_BEE (1)
Scrophulariaceae  Penstemon grandiflorus @ BBSL (1)
Solanaceae  Physalis philadelphica @ AMNH_BEE (1)
_  M Spring @ PN- (12)

Withheld @ BBSL (1)

blueberry @ NLA (2)

caneberry @ NLA (1)

cucurbit @ NLA (12)

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Following modified from CalPhotos
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http://calphotos.berkeley.edu/cgi/img_query?query_src=dl&where-taxon=Bombus+vagans&where-lifeform=specimen_tag&rel-lifeform=ne&rel-taxon=begins+with&where-lifeform=Animal ---> https://calphotos.berkeley.edu/cgi/img_query?query_src=dl&where-taxon=Bombus+vagans&where-lifeform=specimen_tag&rel-lifeform=ne&rel-taxon=begins+with&where-lifeform=Animal
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