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Triepeolus pectoralis (Robertson, 1897)
Epeolus pectoralis Robertson, 1897; Epeolus virginiensis Cockerell, 1907; Epeolus oswegoensis Mitchell, 1962

Life   Insecta   Hymenoptera   Apoidea   Apidae   Triepeolus
Subgenus: None

Triepeolus pectoralis, female PaDIL
Laurence Packer · 9
Triepeolus pectoralis, female PaDIL

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Triepeolus pectoralis, male PaDIL
Laurence Packer · 9
Triepeolus pectoralis, male PaDIL
Triepeolus pectoralis, male, face
Smithsonian Institution, Entomology Department · 9
Triepeolus pectoralis, male, face

Triepeolus pectoralis, male, side
Smithsonian Institution, Entomology Department · 9
Triepeolus pectoralis, male, side
Triepeolus pectoralis, male, top
Smithsonian Institution, Entomology Department · 9
Triepeolus pectoralis, male, top

Triepeolus pectoralis, male, wing
Smithsonian Institution, Entomology Department · 9
Triepeolus pectoralis, male, wing
Triepeolus pectoralis FEM CFP comp
© Copyright Laurence Packer 2014 · 7
Triepeolus pectoralis FEM CFP comp

Triepeolus pectoralis MALE CFP comp
© Copyright Laurence Packer 2014 · 7
Triepeolus pectoralis MALE CFP comp
Triepeolus pectoralis Female
© Copyright Laurence Packer 2014 · 7
Triepeolus pectoralis Female

Triepeolus pectoralis Male
© Copyright Laurence Packer 2014 · 7
Triepeolus pectoralis Male
Triepeolus pectoralis, F, back, Massachusetts, Suffolk, Great Brewster Island ---.. ZS PMax
© Copyright source/photographer · 5
Triepeolus pectoralis, F, back, Massachusetts, Suffolk, Great Brewster Island ---.. ZS PMax

Triepeolus pectoralis, F, face, Massachusetts, Suffolk, Great Brewster Island ---.. ZS PMax
© Copyright source/photographer · 5
Triepeolus pectoralis, F, face, Massachusetts, Suffolk, Great Brewster Island ---.. ZS PMax
Triepeolus pectoralis, F, side, Massachusetts, Suffolk, Great Brewster Island ---.. ZS PMax
© Copyright source/photographer · 5
Triepeolus pectoralis, F, side, Massachusetts, Suffolk, Great Brewster Island ---.. ZS PMax

Triepeolus pectoralis M mm Xb-comp
Thomas Onuferko · 5
Triepeolus pectoralis M mm Xb-comp
Triepeolus pectoralis, F mm Xb-comp
Thomas Onuferko · 5
Triepeolus pectoralis, F mm Xb-comp
Overview
Reprinted with permission from: Mitchell, T.B. 1962 Bees of the Eastern United States. North Carolina Agricultural Experiment Station Technical Bulletin No. 152.

FEMALE—Length 10 mm.; black, including tubercles, tegulae and labrum, the legs bright testaceous, mid and hind spurs piceous, mandibles somewhat reddened; median segments of flagellum somewhat longer than broad, basal segment more ferruginous, distinctly shorter than segment 2, following segments piceous beneath, blackish above; space between margin of vertex and lateral ocelli much narrower than their diameter; cheeks slightly less than half width of eyes, still narrower below, hind margin subcarinate; median length of labrum about half the breadth, apical margin with a pair of quite distinct, sub- median tenticles; posterior margin of scutellum broadly outcurved, shallowly impressed medially, free part of axillae somewhat divergent from sides of scutellum but rather short, reaching slightly beyond mid trans.. verse line (fig. 112); wings subhyaline basally, becoming faintly infuscated apically, with the usual three submarginal cells, veins brownish to piceous; face with some dense, appressed, whitish tomentum around bases of antennae, over supraclypeal area, and more thinly on clypeus and cheeks, face above with more erect, elongate, pale hairs, vertex largely bare; margin of pronotum, a pair of narrow, parallel, anterior lines on scutum, and lateral margins and scutello-mesothoracic suture of scutum, with dense yellowish tomentum; tubercles somewhat more whitish tomentose and with a quite dense marginal fringe, pleura with some dense pale tomentum above, but area just below tegulae somewhat more thinly tomentose; metanotum and adjacent margin of scutellum densely pale yellowish tomentose, with tufts of elongate pale hairs on each extreme side behind wing bases; upper lateral areas of posterior face of propodeum densely whitish tomentose; basal abdominal tergum with a broad, transverse patch of black tomentum, anterior face and posterior margin densely yellow tomentose, these areas rather narrowly joined at each extreme side and slightly interrupted medially; tergum 2 with a transverse fascia which is slightly removed from rim near mid point, and with a pair of slightly oblique patches of pale tomentum on each extreme side, reaching from fascia to basal margin; terga 3 and 4 with dense. appressed, pale yellowish, apical fasciae; tergum 5 more greyish tomentose on each side of pseudopygidium; punctures of tegulae deep and distinct but fine and close, becoming narrowly impunctate along outer rim; punctures of face above antennae coarse, deep, distinct and quite close, becoming finer and densely crowded across vertex and on cheeks, face below antennae minutely and very closely punctate, and clypeus with scattered, shallow, somewhat coarser punctures; scutum rather finely rugoso-punctate throughout, the scutellum and axillae more finely and densely rugoso-puncate; pleura below shining, with rather fine, scattered, widely separated punctures, becoming densely rugoso-punctate above; punctures of abdominal terga very fine, uniform, densely crowded throughout beneath black tomentum; pseudopygidium rather narrow, slightly longer than broad, apical margin rather broadly rounded, covered with short, suberect, rather fine, pale setae; sternum 5 broadly convex as seen from beneath.

MALE—Similar to female in many characters, but face more densely and completely silvery tomentose, mesopleura laterally and beneath densely silvery tomentose, completely hiding the surface; sterna 2 and 3 with broad, white, apical, tomentose fasciae, 4 with a submarginal fringe of elongate, apically curved but rather fine setae, the much narrower fringe on 5 of shorter hairs; tergum 5 with an apical, dense, pale yellowish fascia, that on 6 hardly evident; pygidial plate strongly elevated above disc of tergum 7, apical part beyond transverse ridge slightly longer than broad, evenly rounded, margin carinate, surface quite smooth.

DISTRIBUTION — Minnesota to the New England states, south to Georgia; August to November. FLOWER RECORDS—Aster, Haplopappus and Polygala. Robertson (1929) records pectoralis on Bidens, Boltonia, Eupatorium, Rudbeckia, Solidago and Verbena.

HOST—This species has been collected at nesting sites of Melissodes rustica.

Names
Scientific source:

Supported by

Hosts · map
FamilyScientific name @ source (records)
Apiaceae  Daucus carota @ CUIC_ENT (2)
Asteraceae  Chrysopsis mariana @ AMNH_BEE (1)

Grindelia squarrosa @ AMNH_BEE (2)

Hypochaeris radicata @ UCMS_ENT (11)

Pityopsis falcata @ UCMS_ENT (1)

Solidago nemoralis @ UCMS_ENT (5)

Solidago sempervirens @ UCMS_ENT (1)

Solidago tenuifolia @ UCMS_ENT (3)

Solidago @ CUIC_ENT (10)
Ericaceae  Calluna vulgaris @ UCMS_ENT (1)
Lamiaceae  Mentha piperita @ UCMS_ENT (1)

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Updated: 2018-11-16 22:25:25 gmt
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