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Lasioglossum truncatum (Robertson, 1901)
Halictus truncatus Robertson, 1901; Halictus fulgidus Crawford, 1902; Evylaeus truncatus (Robertson, 1901)

Life   Insecta   Hymenoptera   Apoidea   Halictidae   Lasioglossum
Subgenus: Sphecodogastra

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

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Lasioglossum truncatum FEM mm .x f
© Copyright Laurence Packer 2014 · 7
Lasioglossum truncatum FEM mm .x f
Lasioglossum truncatum MALE mm .x ZS PMax
© Copyright Laurence Packer 2014 · 7
Lasioglossum truncatum MALE mm .x ZS PMax

Lasioglossum truncatum, M, Back, MD, Cecil County ---.. ZS PMax
© Copyright source/photographer · 5
Lasioglossum truncatum, M, Back, MD, Cecil County ---.. ZS PMax
Lasioglossum truncatum, M, Face, MD, Cecil County ---.. ZS PMax
© Copyright source/photographer · 5
Lasioglossum truncatum, M, Face, MD, Cecil County ---.. ZS PMax

Lasioglossum truncatum, M, Side, MD, Cecil County ---.. ZS PMax
© Copyright source/photographer · 5
Lasioglossum truncatum, M, Side, MD, Cecil County ---.. ZS PMax
Lasioglossum truncatum, M, Back, MD, Cecil County ---.. ZS PMax
© Copyright source/photographer · 5
Lasioglossum truncatum, M, Back, MD, Cecil County ---.. ZS PMax

Lasioglossum truncatum, M, Face, MD, Cecil County ---.. ZS PMax
© Copyright source/photographer · 5
Lasioglossum truncatum, M, Face, MD, Cecil County ---.. ZS PMax
Lasioglossum truncatum, M, Side, MD, Cecil County ---.. ZS PMax
© Copyright source/photographer · 5
Lasioglossum truncatum, M, Side, MD, Cecil County ---.. ZS PMax

Lasioglossum truncatum, Barcode of Life Data Systems
Barcode of Life Data Systems · 1
Lasioglossum truncatum, Barcode of Life Data Systems
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, very short and thin, somewhat more dense on thorax laterally; head somewhat broader than long; clypeus slightly convex, projecting about one-half below suborbital line; eyes slightly convergent below; cheeks subequal to eyes in width; lateral ocelli slightly nearer margin of vertex than to eyes; face above antennae shining, punctures fine but deep and distinct, slightly separated, supraclypeal area and lateral portions of face below shining, somewhat more sparsely punctate; clypeus shining and rather sparsely punctate, punctures becoming coarser apically; area between eyes and ocelli shining, punctures scattered and very minute, median portion of vertex shining and obscurely punctate; upper portion of cheeks shining, minutely and obscurely punctate, becoming rather distinctly striate below; scutum shining, punctures rather deep and distinct, well separated in median portion of disc, becoming quite close laterally, scutellum shining, punctures variable in size, scattered on each side of a somewhat more closely and finely punctate median line; pleura rather coarsely rugose; dorsal area of propodeum coarsely rugoso-striate, posterior face relatively smooth, margined laterally with distinct carinae which extend fully to the dorsal margin; wings subhyaline, veins and stigma ferruginous; tegulae fuscous to blackish, with a paler, median spot and yellowish-hyaline, anterior margin; legs blackish except for the extreme apical segments; hind basitibial plate somewhat obscured by pubescence, triangularly acute; abdominal terga polished, very minutely punctate, punctures scattered and irregular on basal tergum, quite close on basal portions of the following terga but very sparse apically on 2 and 3, terga 2-4 with dense, white, basal fasciae, discal pubescence very sparse, short and inconspicuous, entirely pale.


Male - John Ascher has pointed out that the Mitchell's description of the male of L. truncatum (listed as Evylaeus truncatus) is that actually of L. oenotherae.

DISTRIBUTION—Maine and Quebec to Washington (state), south to Georgia; March to October.

FLOWER RECORDS—Apocynum, Aronia, Barbarea, Brassica, Ceanothus, Chrysanthemum, Crataegus, Erigeron, Eupatorium, Krigia, Melilotus, Rubus, Salix, Solidago and Viburnum. Robertson (1929) records this species also on Claytonia, Cryptotaenia, Hydrangea, Malva and Sium.


Identification
Female. This is a very large species, 9-10mm, the humeral angle of the pronotum is 90 degrees, and there is the usual gray appressed hairs on the pronotum, these same hairs expand out on the metanotum to occupy most of the center of the segment.

Names
Scientific source:

Supported by

Hosts · map
FamilyScientific name @ source (records)
Amaryllidaceae  Allium cepa @ CUIC_ENT (1)
Apiaceae  Daucus carota @ CUIC_ENT (2)
Apocynaceae  Apocynum androsaemifolium @ CUIC_ENT (10)
Asteraceae  Cichorium intybus @ CUIC_ENT (1)

Erigeron strigosus @ CUIC_ENT (2)

Eurybia macrophylla @ CUIC_ENT (3)

Solidago @ CUIC_ENT (7); AMNH_BEE (2)

Taraxacum campylodes @ CUIC_ENT (3)
Brassicaceae  Barbarea vulgaris @ CUIC_ENT (23)

Barbarea @ CUIC_ENT (1)

Brassica @ CUIC_ENT (14)

Lesquerella filiformis @ AMNH_BEE (1)
Buxaceae  Buxus microphylla @ CUIC_ENT (1)
Campanulaceae  Campanula rapunculoides @ CUIC_ENT (1)
Cannaceae  Canna @ AMNH_BEE (1)
Cornaceae  Cornus stolonifera @ CUIC_ENT (5)
Ericaceae  Rhododendron mucronulatum @ CUIC_ENT (1)

Vaccinium @ CUIC_ENT (1)
Fabaceae  Lotus corniculatus @ CUIC_ENT (1)

Medicago sativa @ CUIC_ENT (5)

Melilotus officinalis @ CUIC_ENT (29)
Hypericaceae  Hypericum perforatum @ CUIC_ENT (1)
Onagraceae  Oenothera speciosa @ CUIC_ENT (4)

Oenothera @ CUIC_ENT (2)
Polygonaceae  Fagopyrum esculentum @ CUIC_ENT (3)
Ranunculaceae  Ranunculus septentrionalis @ CUIC_ENT (1)

Ranunculus @ CUIC_ENT (1)
Rosaceae  Amelanchier arborea @ CUIC_ENT (1)

Malus @ CUIC_ENT (4)

Potentilla recta @ CUIC_ENT (11)

Prunus cerasus @ CUIC_ENT (1)

Prunus triloba @ AMNH_BEE (1)

Rosa carolina @ CUIC_ENT (2)

Rosa @ AMNH_BEE (1)

Spiraea latifolia @ CUIC_ENT (2)

Spiraea @ CUIC_ENT (3)
Salicaceae  Salix @ CUIC_ENT (23); AMNH_BEE (2)
_  Bee @ LAR (1)

caneberry @ NLA (2)

cucurbit @ NLA (1)

strawberry @ NLA (4)

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Updated: 2019-08-23 21:51:54 gmt
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