D I S C O V E R    L I F E   
Bee Hunt! Odonata Lepidoptera 
  HomeAll Living ThingsIDnature guidesGlobal mapperAlbumsLabelsSearch
  AboutNewsEventsResearchEducationProjectsStudy sitesHelp


Lasioglossum pectorale (Smith, 1853)
Halictus pectoralis Smith, 1853; Evylaeus pectoralis (Smith, 1853)

Life   Insecta   Hymenoptera   Apoidea   Halictidae   Lasioglossum
Subgenus: Hemihalictus

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

Click on map for details about points.

Links
80x5 - 240x3 - 240x4 - 320x1 - 320x2 - 320x3 - 640x1 - 640x2
Set display option above.
Click on images to enlarge.
Lasioglossum pectorale
© Copyright Hadel Go 2014-2015 · 9
Lasioglossum pectorale
Lasioglossum pectorale, female, lateral
David Cappaert · 8
Lasioglossum pectorale, female, lateral

Lasioglossum pectorale, Thorax, scutum, surface reflectivity semi, pectorale
David Cappaert · 8
Lasioglossum pectorale, Thorax, scutum, surface reflectivity semi, pectorale
Lasioglossum pectorale, thorax, mesepi, rough, pectorale
David Cappaert · 8
Lasioglossum pectorale, thorax, mesepi, rough, pectorale

Lasioglossum pectorale, thorax, propodeum carinate
David Cappaert · 8
Lasioglossum pectorale, thorax, propodeum carinate
Lasioglossum pectorale
© Copyright Hadel Go 2014-2015 · 8
Lasioglossum pectorale

Lasioglossum pectorale
© Copyright Hadel Go 2014-2015 · 8
Lasioglossum pectorale
Lasioglossum pectorale
© Copyright Hadel Go 2014-2015 · 8
Lasioglossum pectorale

Lasioglossum pectorale
© Copyright Hadel Go 2014-2015 · 8
Lasioglossum pectorale
Lasioglossum pectorale MALE CFP comp
© Copyright Laurence Packer 2014 · 7
Lasioglossum pectorale MALE CFP comp

Lasioglossum pectorale
© Copyright John Ascher, 2006-2014 · 6
Lasioglossum pectorale
Lasioglossum pectorale, f on Hie --
Michael Veit · 6
Lasioglossum pectorale, f on Hie --

Lasioglossum pectorale, f on Ru --
Michael Veit · 6
Lasioglossum pectorale, f on Ru --
Lasioglossum pectorale, F, Back, FL, Brevard Co
© Copyright source/photographer · 5
Lasioglossum pectorale, F, Back, FL, Brevard Co
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 6 mm.; black; pubescence white, very short and thin, but somewhat more copious on thorax laterally; length and breadth of head equal; clypeus slightly convex, projecting about two-thirds below suborbital line; eyes somewhat convergent below; cheeks subequal to eyes in width; lateral ocelli slightly nearer margin of vertex than to eyes; face above antennae rather dull, punctures deep and distinct, rather coarse and quite close, becoming somewhat more distinctly separated, but still quite close below; clypeus with coarser and much more sparse punctures apically; area between eyes and ocelli shining, punctures finer and more widely separated, vertex medially somewhat shining, with very fine, obscure punctures; cheeks somewhat shining and obscurely punctate above, becoming quite distinctly striate below; scutum somewhat shining, punctures deep and distinct, quite close throughout, becoming almost crowded laterally, scutellum quite flat, shining, punctures irregularly scattered and variable as to size; pleura very coarsely reticulate; dorsal area of propodeum coarsely rugoso-striate, the striae becoming more regular laterally, posterior face somewhat smoother, marginal carinae complete, but widely divergent above; wings hyaline, veins and stigma testaceous; tegulae piceous, with a yellowish-hyaline anterior margin; legs dark, but becoming somewhat reddened apically, hind basitibial plate triangular, acute; abdominal terga shining, very minutely punctured, the punctures widely scattered and very sparse on basal tergum, becoming somewhat closer but more minute and obscure apically, terga 2 and 3 with basal, white fasciae evident laterally but usually obscured medially, discal pubescence barely evident, suberect, entirely pale.

MALE�Length 5 mm.; black, including all of clypeus, labrum and legs; pubescence whitish, very short and thin; length and breadth of head equal; clypeus only slightly convex, projecting about one-half below suborbital line; eyes slightly convergent below; mandibles reddened apically, simple, rather short; labrum triangular, acute but not spine-like apically; cheeks subequal to eyes in width; lateral ocelli very slightly nearer margin of vertex than to eyes; basal segment of flagellum very short, somewhat broader than long, subequal in length to pedicel, following segments also very short, somewhat brownish below, piceous above; face above antennae dull, densely and finely rugoso-punctate, lower portion of face above clypeus with somewhat more distinct but close punctures; clypeus more shining, finely and rather closely punctate above, becoming sparsely and closely punctate below; area between eyes and ocelli more shining and more distinctly punctate, vertex somewhat shining, obscurely sculptured, cheeks striate; scutum somewhat shining, punctures deep and distinct, separated by about a puncture width over most of median portion but quite close laterally, scutellum rather flat, shining, similarly punctured; pleura very coarsely reticulate; dorsal area of propodeum coarsely striate, posterior face somewhat smoother, marginal carinae rather distinct, widely divergent above; wings subhyaline, veins and stigma brownish-testaceous; tegulae piceous except for a median lighter area and the yellowish-hyaline anterior margin; legs entirely dark except for the somewhat reddened tarsal segments; abdominal terga somewhat shining, very finely and quite closely and regularly punctate, without distinct fasciae, discal pubescence very short and thin, entirely pale; apical margin of sternum 5 nearly straight, 6 rather broadly rounded; gonostylus short and inconspicuous, thinly clothed with short pubescence, the ventral, retrorse lobe broadly expanded, thinly but rather uniformly clothed with short pubescence.

DISTRIBUTION�Nova Scotia to Florida, west to Wisconsin, Nebraska and Texas; March to November.

FLOWER RECORDS � Antennaria, Apocynum, Asclepias, Barbarea, Bidens, Brassica, Ceanothus, Chichorium, Chrysanthemum, Crataegus, Daucus, Erigeron, Fragaria, Helenium, Hieraceum, Hypericum, hex, Ligustrum, Medicago, Melilotus, Oxalis, Potentilla, Prunus, Rhus, Rubus, Rudbeckia, Salvia, Senecio, Solidago, Stachys, Stokesia, Toxicoclendrum, Trifolium and Vernonia. Robertson (1929) records pectoralis on the following additional genera: Actea, Amorpha, Anemonella, Arabis, Aruncus, Aster, Blephilia, Brauneria, Cacalia, Camassia, Capsella, Cardamine, Cassia, Circaea, Cirsium, Claytonia, Coreopsis, Cornus, Cryptotaenia, Ellisia, Eryngium, Eulophus, Eupatorium, Geranium, Geum, Gillenia, Helianthus, Heliopsis, Heracleum, Houstonia, Hydrangea, Hydrophyllum, Hypoxis, Isopyrum, Krigia, Laotuca, Lepidium, Lippia, Ludwigia, Malva, Monarda, Oenothera, Osmorrhiza, Pastinaca, Polytaenia, Potentilla, Pycnanthemum, Radicula, Ranunculus, Sagittaria, Salix, Scutellaria, Silphium, Sisymbrium, Smilacina, Smilax, Sympharicarpus, Taenidia, Thaspium, Tilia, Tradescantia, Valerianelici, Verbascum, Verbena, Viburnum and Zizia. Brittain and Newton (1934) record this species also on Achillea, Diervilla, Epilobium, Leontodon, Rosa, Spergula and Stellaria.


Identification
This species is marked by the extreme degree of surface topography on the mesepisturnum, a series of reticulations similar to L. cressonii, the propodeum also has a clear sharp edge to the rim and the striations are bold, tall, clear, and go to the edge of the rim, the metanotum has an anterior band of gray fuzz that is up to one quarter of the segment, the humeral angle is rather prominent and is lined with appressed white hairs, 6-6.5mm

Males and females are very similar in appearance and even antennal length

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. Both sexes of L. pectorale can be recognised by the combination of mesepisternum coarsely rugose throughout (Fig. 76C) and mesoscutum with distinct, coarse punctation throughout. Lasioglossum nelumbonis have similar sculpture on the mesepisternum but are easily distinguished by rugose anterolateral portion of the mesoscutum and distinctive propodeal pubescence (Fig. 75A). Both L. cinctipes and L. truncatum have less rugose sculpture on the posterior portion of the mesepisternum (as in 76F), wider heads (Figs. 43A, 43I) and fine mesoscutal punctation.

The black colouration and coarse sculpturing of the subgenus L. (Leuchalictus) may cause small individuals of L. leucozonium or L. zonulum to be mistaken for L. pectorale. Female L. (Leuchalictus) have vein 1rs-m strong and inner metatibial spurs denticulate, with short teeth. Female L. pectorale have pectinate inner metatibial spurs (Fig. 5I). Male L. zonulum and L. leucozonium have yellow on the clypeus and distinct features of metasomal S6, either a V-shaped hair pattern in L. leucozonium or distinctive medial hair tufts in L. zonulum. Male L. pectorale have the clypeus entirely black (Fig. 6I) and lack distinctive hairs on S6.

Redescription. FEMALE. Length 5.3–6.7 mm. Head length 1.47–1.73 mm. Head width 1.52–1.80 mm. Wing length 3.6–4.4 mm. (n=10)

Colour. Head and mesosoma black. Antenna black-brown, 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 reddish brown. Metasomal terga black-brown, apical margins pale brown.

Structure. Head round (L/W ratio = 0.96–1.01). Clypeus 2/3–3/4 below suborbital line. Eyes convergent below (UOD:LOD = 1.22–1.28). Gena narrower than eye. Ocelli normal. Pronotum smoothly rounded. Protibial spur with serrations as long as width of malus. Inner metatibial spur pectinate, teeth 4–5, basal teeth longer than width of rachis. Metapostnotum carinate on posterior margin. Propodeal lateral carina reaching dorsolateral slope, oblique carina high.

Surface sculpture. Supraclypeal area weakly polished medially, punctures sparse (i=1–1.5d). Gena and postgena carinulate. Mesoscutum polished-weakly imbricate; punctures coarse, contiguous laterally (i Pubescence. Head and mesosoma with sparse plumose hairs. Metafemoral scopa with dense plumose hairs. Propodeum with sparse plumose hairs. Metasomal terga with apical fimbriae sparse. T1 with erect plumose hairs. T2–T3 with basolateral tomentum. Metasomal sterna with plumose scopa.

MALE. Length 5.0–5.4 mm. Head length 1.34–1.60 mm. Head width 1.34–1.56 mm. Wing length 3.6–4.1 mm. (n=5)

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

Surface sculpture. Supraclypeal area weakly imbricate, punctures relatively dense (i=1–1.5d). Gena and postgena lineolate. Mesoscutum polished; punctures dense laterally (i≤d), distinctly separated medially (i=1–1.d). Mesepisternum coarsely rugose. Metapostnotum carinate-rugose, apical margin separated from posterior surface by carina. Propodeum rugose. Metasomal terga polished, punctures distinct throughout.

Pubescence. Head and mesosoma with sparse plumose hairs. Lower paraocular area with sparse tomentum. Propodeum covered with sparse tomentum. Metasomal terga nearly bare, apical fimbriae extremely sparse. T2–T3 with very sparse basolateral tomentum. Metasomal sterna with sparse, plumose hairs (1.5–2 OD).


Names
Scientific source:

Supported by

Hosts · map
FamilyScientific name @ source (records)
Adoxaceae  Viburnum dentatum @ UCMS_ENT (1)
Apocynaceae  Asclepias syriaca @ UCMS_ENT (1)
Arecaceae  Sabal palmetto @ AMNH_BEE (1)
Asteraceae  Achillea millefolium @ B_AW (6); UCMS_ENT (2)

Anthemis cotula @ UCMS_ENT (4)

Aster @ AMNH_BEE (1)

Bidens @ AMNH_BEE (1)

Caenotus @ AMNH_BEE (1)

Cichorium intybus @ UCMS_ENT (1)

Cirsium arvense @ UCMS_ENT (3)

Cirsium undulatum @ AMNH_BEE (6)

Cirsium @ AMNH_BEE (1)

Echinacea pallida @ AMNH_BEE (1)

Erigeron philadelphicus @ AMNH_BEE (8)

Erigeron @ AMNH_BEE (1)

Gaillardia aristata @ AMNH_BEE (1)

Grindelia squarrosa @ AMNH_BEE (2)

Helianthus petiolaris @ AMNH_BEE (1)

Hieracium caespitosum @ UCMS_ENT (1)

Hypochaeris radicata @ UCMS_ENT (2)

Lactuca pulchella @ AMNH_BEE (9)

Leucanthemum vulgare @ UCMS_ENT (19)

Pityopsis falcata @ UCMS_ENT (3)

Ratibida columnifera @ AMNH_BEE (2)

Rudbeckia hirta @ AMNH_BEE (1)

Rudbeckia laciniata @ AMNH_BEE (1)

Senecio plattensis @ AMNH_BEE (3)

Solidago canadensis @ AMNH_BEE (2)

Solidago missouriensis @ AMNH_BEE (1)

Solidago @ AMNH_BEE (9); UCMS_ENT (1)

Sonchus arvensis @ UCMS_ENT (1)

Taraxacum campylodes @ UCMS_ENT (1)

Taraxacum officinale @ AMNH_BEE (4)
Brassicaceae  Barbarea vulgaris @ UCMS_ENT (1)

Lesquerella filiformis @ AMNH_BEE (1)

Raphanus raphanistrum @ UCMS_ENT (3)

Sinapis arvensis @ AMNH_BEE (1)
Campanulaceae  Triodanis perfoliata @ AMNH_BEE (1)
Ericaceae  Calluna vulgaris @ UCMS_ENT (1)

Rhododendron @ AMNH_BEE (2)

Vaccinium @ UCMS_ENT (1)
Fabaceae  Melilotus officinalis @ AMNH_BEE (1)

Tephrosia virginiana @ AMNH_BEE (1)
K. kingsley  1063 @ JRYB__SHEN (1)
Lamiaceae  Mentha piperita @ UCMS_ENT (1)

Nepeta cataria @ UCMS_ENT (1)

Physostegia parviflora @ AMNH_BEE (2)
Onagraceae  Calylophus serrulatus @ AMNH_BEE (2)
Oxalidaceae  Oxalis stricta @ AMNH_BEE (3)
Passifloraceae  Passiflora @ AMNH_BEE (1)
Plantaginaceae  Penstemon @ AMNH_BEE (1)
Plumbaginaceae  Limonium carolinianum @ UCMS_ENT (1)
Ranunculaceae  Ranunculus acris @ UCMS_ENT (1)

Ranunculus septentrionalis @ AMNH_BEE (1)

Ranunculus sp @ UCMS_ENT (1)
Rhamnaceae  Ceanothus @ AMNH_BEE (1)
Rosaceae  Fragaria virginiana @ AMNH_BEE (4)

Potentilla pumila @ AMNH_BEE (1)

Potentilla @ AMNH_BEE (1)

Rosa rugosa @ UCMS_ENT (2)

Rosa @ AMNH_BEE (1)

Rubus @ CUIC_ENT (7); UCMS_ENT (1)
Unplaced  none 2589 @ AMNH_BEE (1)

none 4457 @ AMNH_BEE (1)
_  Bee @ LAR (18)

apple @ NLA (2)

blueberry @ NLA (12)

caneberry @ NLA (18)

cucurbit @ NLA (21)

strawberry @ NLA (5)

go to Discover Life's Facebook group

Updated: 2024-05-22 20:07:56 gmt
Discover Life | Top
© Designed by The Polistes Corporation