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Lasioglossum quebecense (Crawford, 1907)
Halictus quebecensis Crawford, 1907; Evylaeus quebecensis (Crawford, 1907)

Life   Insecta   Hymenoptera   Apoidea   Halictidae   Lasioglossum
Subgenus: Sphecodogastra

Lasioglossum quebecense, Mid-Atlantic Phenology
© Copyright source/photographer · 9
Lasioglossum quebecense, Mid-Atlantic Phenology

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    This is a common woodland associated species. Often abundant in bottomlands in early spring. In females, the relatively large size, and the distinctive propodeum can be helpful in identification. The lateral carinae that define the rear face are nearly straight and go all the way to the top. The males look quite different than the females, with very dull, densely pitted scutums, a highly reticulated propodeum, and almost no hairs on the underside of the abdomen. In some cases males can have extensive red on the basal tergites.
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Lasioglossum quebecense, female, head, OBA
© Copyright source/photographer · 9
Lasioglossum quebecense, female, head, OBA
Lasioglossum quebecense, female, lateral, OBA
© Copyright source/photographer · 9
Lasioglossum quebecense, female, lateral, OBA

Lasioglossum quebecense, female, head, OBA
© Copyright source/photographer · 9
Lasioglossum quebecense, female, head, OBA
Lasioglossum quebecense, female, lateral
© Copyright source/photographer · 9
Lasioglossum quebecense, female, lateral

Lasioglossum quebecense, female, OBA
© Copyright source/photographer · 9
Lasioglossum quebecense, female, OBA
Lasioglossum quebecense FEM CFP comp
© Copyright Laurence Packer 2014 · 7
Lasioglossum quebecense FEM CFP comp

Lasioglossum quebecense MALE CFP comp
© Copyright Laurence Packer 2014 · 7
Lasioglossum quebecense MALE CFP comp
Lasioglossum quebecense
© Copyright John Ascher, 2006-2014 · 6
Lasioglossum quebecense

Lasioglossum quebecense, sweat bee
© Copyright John Ascher, 2006-2014 · 4
Lasioglossum quebecense, sweat bee
Lasioglossum quebecense, sweat bee
© Copyright John Ascher, 2006-2014 · 4
Lasioglossum quebecense, sweat bee

Lasioglossum quebecense, red male
Rob Snyder · 1
Lasioglossum quebecense, red male
Lasioglossum quebecense, red male head
Rob Snyder: Pennsylvania State University · 1
Lasioglossum quebecense, red male head

Lasioglossum quebecense, red male abdomen
Rob Snyder: Pennsylvania State University · 1
Lasioglossum quebecense, red male abdomen
Lasioglossum quebecense, red male side
Rob Snyder: Pennsylvania State University · 1
Lasioglossum quebecense, red male side
Overview
Reprinted with permission from: Mitchell, T.B. 1960 Bees of the Eastern United States. North Carolina Agricultural Experiment Station Technical Bulletin No. 141.

FEMALE�Length 7 mm.; black; pubescence white, rather thin except on thorax laterally; length and breadth of head equal; clypeus slightly rounded, projecting about two- thirds below suborbital line; eyes only very slightly convergent below; cheeks subequal to eyes in width; lateral ocelli slightly nearer margin of vertex than to eyes; face above antennae dull, very densely and finely punctate, punctures of face below antennae quite sparse, the surface tessellate except on clypeus apically; area between eyes and ocelli densely punctate, vertex medially dull, obscurely sculptured, the cheeks finely striate above, becoming somewhat more coarsely so medially, but ventral portion quite smooth; scutum densely tessellate between rather fine and shallow punctures, these well separated in central portion of disc, becoming very close laterally; scutellum dull, punctures well separated on each side of a slight, median impression where punctures are closer; pleura with rather low but coarse reticulations above, becoming relatively smooth but densely tessellate below; dorsal area of propodeum somewhat shining, rather coarsely striate, posterior face quite smooth, bordered laterally with low but quite distinct carinae which reach the dorsal margin; wings subhyaline, veins and stigma testaceous; tegulae dark anteriorly except for the hyaline anterior border, becoming more ferruginous posteriorly; legs dark except for the apical, reddened, tarsal segments; hind basitibial plate small, triangular, acute; abdominal terga rather dull, punctures exceedingly minute and obscure, not visible except at very high magnification, terga 2 and 3 with thin and inconspicuous, apical fasciae slightly evident laterally, without distinct basal fasciae, discal pubescence extremely short, thin and entirely pale.

MALE�Length 6-8 mm.; black; labrum, apical half of clypeus and legs in part, yellowish; pubescence whitish, very short and thin; length and breadth of head equal; clypeus rather narrow and protuberant, projecting about two thirds below suborbital line; eyes rather strongly convergent below; mandibles simple, not greatly elongated, entirely dark; labrum transverse, without a median projection, entirely yellow; cheeks slightly narrower than eyes; lateral ocelli slightly nearer margin of vertex than to eyes; basal segment of flagellum very short, not much longer than broad, but somewhat longer than pedicel, the second and following segments elongate, fully twice as long as broad, ferruginous below, piceous above, face above antennae, dull, densely rugoso-punctate, becoming somewhat shining below between the fine and rather close punctures, these becoming more coarse and sparse on apical half of clypeus; area between eyes and ocelli dull, roughened, the vertex medially dull, with obscure transverse striations, cheeks finely striate; scutum tessellate between fine and quite close punctures, these somewhat separated near center posteriorly but very closely crowded laterally; scutellum dull, very closely punctate throughout, with a very slight median impression; pleura dull and rather finely rugose above, becoming somewhat more shining and with obscure reticulations below; dorsal area of propodeum rather coarsely rugoso-striate, posterior face coarsely reticulate, the lateral carinae rather indefinite; wings subhyaline, veins and stigma brownish-testaceous; tegulae rather dark ferruginous, with a broad, yellowish-hyaline, anterior border; legs dark basally, tibiae dark except for basal and apical yellowish spots, front tibiae yellowish anteriorly, all of tarsi yellowish; abdominal terga somewhat shining, punctures very fine but rather deep and distinct, scattered on basal tergum, but close basally on the following terga, becoming sparse or absent apically, with only very obscure and indefinite, basal, whitish fasciae evident laterally on terga 2 and 3; apical margin of sternum 5 straight, 6 rather broadly rounded; gonostylus short, truncate, only thinly pubescent, the ventral, retrorse lobe quite short, attenuated apically, thinly pubescent along outer side.

DISTRIBUTION � Newfoundland and Nova Scotia to Minnesota, south to Georgia; April to September.

FLOWER RECORDS�Acer, Aruncus, Azalea, Barbarea, Berteroa, hex, Melilotus, Rubus, Solidago, Taraxacum, Vaccinium and Viburnum. Brittain and Newton (1934) record it also on Kalmia, Malus and Prunus.


Identification
This is a large species, 7.5-8mm, in the male the rear face of the propodeum with lateral raised lines that rise up to form a v-shaped fork at the top almost reaching the rim of the triangle, the triangle striations weak, widely spaced, not raised very high, reaching to the rim, grey appressed short hairs of metanotum go from narrow on the sides and increase to fill the entire width in the center, similar hair on outside of pronotum, but the only Newfoundland specimen had only a restricted amount. Holotype seen.
John Ascher adds the following additional guides to the identification of this species:
1) This species has (weak) apical hair bands which Lasioglossum supposedly lack; these are lacking in species with which it could be confused such as L. cinctipes, rufitarse, etc.


2) It has a tesselate (not smooth) scutum unlike L. cintipes/truncatum
3) It is very close to L. comagenense but has a longer face, more southeren range, subtly different hair patterns and sculpturing, etc.

Extracted from: Gibbs, J., Packer, L., Dumesh, S. and Danforth, B. N. 2013. Revision and reclassification of Lasioglossum (Evylaeus), L. (Hemihalictus) and L. (Sphecodogastra) in eastern North America (Hymenoptera: Apoidea: Halicidae). Zootaxa 3672 (1). Pp 1-116.

Diagnosis. Female L. quebecense can be recognised by the combination of head long (L/W ratio = 1.00–1.03) (Fig. 43F); mesepisternum finely rugulose (as in Fig. 76D); inner metatibial spur pectinate, teeth longer than width of rachis (Fig. 5O); propodeum with lateral carina distinct, extending to dorsal margin, oblique carina strong (Fig. 79E); T1 dull due to microsculpture; and T1–T3 usually with dense apicolateral fimbriae (Fig. 81C). In the east, L. quebecense are most similar to L. boreale, L. comagenense, and L. seillean, which all lack dense apicolateral fimbriae on T1–T3 (Figs. 81A, 81B, 81D). Lasioglossum boreale and L. comagenense have short teeth on the inner metatibial spur, not exceeding the width of the rachis (Figs. 5M, 5N) and T1 polished due to lack of microsculpture (Figs. 81A, 81B). Lasioglossum comagenense has a noticeably shorter head (L/W ratio = 0.93–0.96) (Fig. 43C). The female of L. boreale has fine propodeal carinae (Fig. 79C). Lasioglossum quebecense is nearly indistinguishable from L. seillean but averages larger in size (6.5–7.0 mm vs. 5.8–6.5 mm).

Male L. quebecense can be recognised by the combination of clypeus with yellow on distal half (Fig. 44F); mandible short, not extending much beyond opposing clypeal angle; F2 long subequal to scape; propodeal lateral carina strong; metasomal sterna nearly bare, hairs present but very short (as in Fig. 85A); S2–S3 with sparse punctures (as in Fig. 88A); base of metatibia brown or with small yellow spot; and all basitarsi bright yellow (Fig. 66). Male L. quebecense often has the mesoscutum scabriculous-reticulate throughout, whereas in L. boreale, L. comagenense, and L. seillean the mesoscutum is distinctly punctate medially, with well-defined interspaces. Males of L. boreale and L. comagenense have a large yellow patch on the metatibial base (Figs. 54, 57). The unique shape of the retrorse lobe (Figs. 87C, 87E), which is long, and strongly attenuated apically, is the most reliable character for distinguishing L. quebecense males from those of L. boreale, L. comagenense, and L. seillean (Figs. 87A, 87B, 87D, 87F).

Redescription. FEMALE. Length 6.5–7.0 mm. Head length 1.82–1.95 mm. Head width 1.80–1.93 mm. Wing length 5.2–5.7 mm. (n=5)

Colour. Head and mesosoma black. Antenna black, except ventral surface of flagellum reddish brown. Tegula dark reddish brown. Legs dark brown, except medio- and distitarsi reddish brown. Wing membrane hyaline, faintly dusky. Pterostigma testaceous. Metasomal terga black-brown, apical margins pale brown-testaceous.

Structure. Head long (L/W ratio = 1.00–1.03). Clypeus ¾ below suborbital line. Eyes convergent below (UOD: LOD = 1.05–1.07). Gena subequal to eye width. Ocelli normal. Pronotum smoothly rounded. Protibial spur with serrations as long as width of malus. Inner metatibial spur pectinate, teeth 3–7, basal teeth longer than width of rachis. Propodeal lateral carina reaching dorsal margin, oblique carina high, separating dorsolateral slope from posterior surface.

Pubescence. Head and mesosoma with sparse plumose hairs. Metafemoral scopa with dense plumose hairs. Metasomal terga with relatively dense, medially-interrupted apical fimbriae. T1 with sparse, erect plumose hairs. T2–T4 basally with sparse, tomentum. Metasomal sterna with plumose scopa.

MALE. Length 5.9–8.6 mm. Head length 1.67–2.13 mm. Head width 1.61–1.98 mm. Wing length 4.8–5.9 mm. (n=7)

Colour. Head and mesosoma black. Clypeus yellow apical half. Mandible brown. Labrum yellow. Antenna black, except ventral surface of flagellum orange, less so on F10–F11. Legs dark brown, except tarsi yellow, bases and apices of tibiae sometimes yellow, anterior surface of protibia sometimes yellow-testaceous. Wing membrane hyaline. Pterostigma orange-brown. Metasomal terga dark brown, pale brown apically; T1–T3 occasionally yellow-orange.

Structure. Head long (L/W ratio = 1.03–1.08). Mandible short, reaching opposing clypeal angle. Flagellomeres, except F1 elongate, F2 longer than F1 and pedicel combined. Eyes strongly convergent below (UOD:LOD = 1.24–1.48). Gena clearly narrower than eye. Pronotum smoothly rounded. Propodeal lateral carina reaching dorsolateral slope, contiguous with strong oblique carina.

Surface sculpture. Supraclypeal area imbricate, with relatively sparse punctures (i=1–1.5d). Gena and postgena lineolate. Mesoscutum reticulate; punctures usually contiguous throughout, sometimes separated medially (i≤d). Mesepisternum rugulose, weakly so ventrally. Metapostnotum anastomosingly rugose. Propodeum rugulose, posterior surface rugose. Metasomal terga polished; punctures deep, close basally. T3–T6 apical impressed areas impunctate.

Pubescence. Head and mesosoma with sparse plumose hairs. Face below antennal sockets with dense tomentum, lower paraocular area obscured, supraclypeal area and clypeus partially obscured, clypeus bare on distal half. Propodeum largely bare, with scattered plumose hairs. Metasomal terga nearly bare, with neither apical fimbriae nor evident tomentum. Metasomal sterna nearly bare, with sparse, short, plumose hairs (≤1 OD).


Names
Scientific source:

Supported by

Hosts · map
FamilyScientific name @ source (records)
Amaryllidaceae  Allium cepa @ CUIC_ENT (3)
Anacardiaceae  Rhus typhina @ CUIC_ENT (1)
Asteraceae  Aster lateriflorus @ CUIC_ENT (3)

Cichorium intybus @ CUIC_ENT (1)

Erigeron @ CUIC_ENT (1)

Eupatorium maculatum @ CUIC_ENT (1)

Eurybia macrophylla @ CUIC_ENT (3)

Gutierrezia sarothrae @ AMNH_BEE (2)

Helianthus @ CUIC_ENT (1)

Solidago graminifolia @ CUIC_ENT (1)

Solidago @ CUIC_ENT (4)

Sonchus arvensis @ CUIC_ENT (3)

Taraxacum campylodes @ CUIC_ENT (21)

Taraxacum namaensis @ CUIC_ENT (1)

Tussilago farfara @ CUIC_ENT (5)

Tussilago @ CUIC_ENT (1)
Berberidaceae  Berberis @ CUIC_ENT (1)
Brassicaceae  Barbarea vulgaris @ CUIC_ENT (106)

Cardamine concatenata @ CUIC_ENT (2)
Caprifoliaceae  Abelia chinensis @ CUIC_ENT (1)
Cornaceae  Cornus alba @ CUIC_ENT (1)

Cornus stolonifera @ CUIC_ENT (5)
Cucurbitaceae  Cucumis sativus @ AMNH_BEE (1)
Ericaceae  Ledum groenlandicum @ CUIC_ENT (1)

Lyonia ligustrina @ CUIC_ENT (1)

Rhododendron @ I_JSA (2)

Vaccinium sp @ CUIC_ENT (6)

Vaccinium stamineum @ CUIC_ENT (2)

Vaccinium @ CUIC_ENT (37)
Fabaceae  Medicago sativa @ CUIC_ENT (1)

Melilotus officinalis @ CUIC_ENT (2)
G. cangialosi  915 @ JRYB__SHEN (3)
J. rykken  1022 @ JRYB__SHEN (1)

1026 @ JRYB__SHEN (1)

1048 @ JRYB__SHEN (2)

1060 @ JRYB__SHEN (1)

1081 @ JRYB__SHEN (1)

1088 @ JRYB__SHEN (2)

582 @ JRYB__SHEN (1)

737 @ JRYB__SHEN (2)

808 @ JRYB__SHEN (1)

832 @ JRYB__SHEN (2)

983 @ JRYB__SHEN (2)
Liliaceae  Erythronium americanum @ CUIC_ENT (1)
Onagraceae  Epilobium anagallidifolium @ AMNH_BEE (1)
Orchidaceae  Triphora trianthophora @ CUIC_ENT (4)
Polygonaceae  Fagopyrum esculentum @ CUIC_ENT (3)
Portulacaceae  Claytonia virginica @ I_JSA (1)
R. minor  808 @ JRYB__SHEN (1)
Rosaceae  Amelanchier arborea @ CUIC_ENT (1)

Amelanchier sp @ CUIC_ENT (1)

Aruncus aruncus @ AMNH_BEE (3); CUIC_ENT (1)

Malus domestica @ CUIC_ENT (1)

Potentilla recta @ CUIC_ENT (2)

Prunus @ CUIC_ENT (3)

Rubus sp @ CUIC_ENT (3)

Rubus @ CUIC_ENT (7)

Spiraea @ CUIC_ENT (6)
Salicaceae  Salix sp @ CUIC_ENT (3)

Salix @ CUIC_ENT (14)
_  apple @ NLA (1)

blueberry @ NLA (1)

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Updated: 2024-03-19 02:27:55 gmt
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