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Hoplitis pilosifrons (Cresson, 1864)
Alcidamea pilosifrons Cresson, 1864; Hoplitis graceae Cockerell, 1923; Alcidamea simplex Robertson, 1929, misidentification; Alcidamea mucronata Cockerell, 1934

Life   Insecta   Hymenoptera   Apoidea   Megachilidae   Hoplitis
Subgenus: Alcidamea

Hoplitis pilosifrons, Mid-Atlantic Phenology
© Copyright source/photographer · 9
Hoplitis pilosifrons, Mid-Atlantic Phenology

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Hoplitis pilosifrons, female, face
Smithsonian Institution, Entomology Department · 9
Hoplitis pilosifrons, female, face
Hoplitis pilosifrons, female, side
Smithsonian Institution, Entomology Department · 9
Hoplitis pilosifrons, female, side

Hoplitis pilosifrons, female, top
Smithsonian Institution, Entomology Department · 9
Hoplitis pilosifrons, female, top
Hoplitis pilosifrons, female, wing
Smithsonian Institution, Entomology Department · 9
Hoplitis pilosifrons, female, wing

Hoplitis pilosifrons FEM CFP comp
© Copyright Laurence Packer 2014 · 7
Hoplitis pilosifrons FEM CFP comp
Hoplitis pilosifrons, eastern neck nwr, kent, md, back ---.. ZS PMax
© Copyright source/photographer · 5
Hoplitis pilosifrons, eastern neck nwr, kent, md, back ---.. ZS PMax

Hoplitis pilosifrons, f, md, eastern neck nwr, side ---.. ZS PMax
© Copyright source/photographer · 5
Hoplitis pilosifrons, f, md, eastern neck nwr, side ---.. ZS PMax
Hoplitis pilosifrons, Barcode of Life Data Systems
Barcode of Life Data Systems · 1
Hoplitis pilosifrons, Barcode of Life Data Systems

Hoplitis pilosifrons, male, t
© USDA Bee Biology and Systematics Laboratory, Logan Utah · 1
Hoplitis pilosifrons, male, t
Hoplitis pilosifrons, male, antenna
© NC Agriculture State Experiment Station Technical Bulletin Number 152, T. B. Mitchell, 1962 · 1
Hoplitis pilosifrons, male, antenna

Hoplitis pilosifrons, male, T7
© NC Agriculture State Experiment Station Technical Bulletin Number 152, T. B. Mitchell, 1962 · 1
Hoplitis pilosifrons, male, T7
Hoplitis pilosifrons, female, top
© Stephanie Kolski and Natalie Allen · 1
Hoplitis pilosifrons, female, top

Hoplitis pilosifrons, male, face
© Stephanie Kolski and Natalie Allen · 1
Hoplitis pilosifrons, male, face
Hoplitis pilosifrons, male, side
© Stephanie Kolski and Natalie Allen · 1
Hoplitis pilosifrons, male, side
Overview
FEMALE—Length 6.5-8.5 mm.; entirely black; face considerably longer than distance between eyes above; eyes very slightly convergent below; lateral ocelli subequally distant from eyes, margin of vertex and each other; clypeus broadly convex, apical margin considerably produced, median portion slightly incurved, margin narrowly shining, without definite punctures; labrum rather flat, median length subequal to its basal width, broadly, rounded apically; mandibles distinctly 3-dentate, not much broadened apically, middle tooth approximate to apical tooth; cheeks slightly broader than eyes; wings faintly infuscated, somewhat more deeply so along outer margin, veins and stigma brownish-piceous; tegulae shining, black, with scattered minute punctures; legs entirely black, front spurs testaceous, mid and hind spurs piceous; pubescence entirely pale, rather short and thin in general, somewhat more elongate around antennae, on cheeks below, pleura, propodeum, and on dorsum of thorax anteriorly and posteriorly; abdominal terga 1-4 with white, apical fasciae, these rather widely interrupted on 1 and 2, entire on 3 and 4, tergum 5 with only an inconspicuous fringe of fine, pale hairs, discal pubescence extremely short and obscure, hardly evident except on the more apical terga; tergum 6 with a quite pronounced, apical rim, at right angles to the more vertical disc; ventral scopa yellowish- white; punctures rather coarse and deep, close in general, more distinctly separated on vertex toward each side, and over scutum and scutellum, fine and close on cheeks, crowded on pleura, propodeum dull and tessellate, punctures fine, shallow and rather indefinite; abdominal terga shining, punctures more definitely separated but still rather close on terga 1-5 medially, becoming quite coarse and close laterally, crowded on tergum 6.

MALE—Length 7-8.5 mm; entirely black; face somewhat longer than distance between eyes above; eyes rather strongly convergent below; antenna! scape robust but not dilated apically, apex excavated and enclosing pedicel; subapical segments of flagellum much broader than long, apical segment more elongate, tapering and slightly curved (fig. 23) ; lateral ocelli subequally distant from eyes and each other, somewhat nearer margin of vertex; clypeus slightly convex, apical margin somewhat produced, the produced area very slightly incurved, angulate at each extreme side and narrowly shining and impunctate, surface usually obscured by dense, erect and rather elongate pubescence; labrum flattened, somewhat shining, length about equal to basal width; mandibles distinctly bi-dentate; cheeks subequal to eyes in width; wings subhyaline, veins and stigma brownish-testaceous; tegulae shining, brownish-piceous, with minute, scattered punctures; legs entirely black, spurs pale testaceous; tergum 7 quite broad at base but narrowly produced medially, almost spine- like, with a narrow and rather deep, median excavation (fig. 22); sterna 1-5 exposed, 2 with a conspicuous, erect, transverse protuberance, 6-8 retracted, form as shown (fig. 24); genital armature as shown; pubescence entirely pale, elongate and rather dense over most of head and thorax, extremely dense around antennae and over lower portions of face and on clypeus, cheeks below with a short but dense fringe, this becoming more elongate posteriorly; pubescence elongate over most of thorax but not hiding surface, terga 1-4 with white, apical fasciae, this widely interrupted on 1 and more or less so on 2, usually entire on 3 and 4, discal pubescence rather copious but short on 1, very short but evident on remaining terga; punctures deep arid distinct, quite close over most of head and thorax, being densely crowded on the more densely pubescent areas of face, more distinctly separated on the shining scutum and scutellum, very close on pleura, propodeum dull but rather smooth, punctures very shallow and indefinite: punctures on abdominal terga 1-4 rather fine and well separated medially, becoming closer and somewhat coarser at sides, uniformly quite coarse and close on 5 and 6, crowded across base of 7.

DISTRIBUTION—Alberta to Quebec and the New England States, south to Texas and Florida, April to August.

FLOWER RECORDS — Barbarea, Geranium, Linaria, Melilotus, Oenothera, Pedicularis, Pent stem on, Potentilla, Rubus, Senecio, Specularia, Tephrosia, Trifolium and Vicia. Robertson (1929) records this species (as Alcidamea simplex) on the following additional genera: Amorpha, Blephilia, Cardamine, Chrysanthemum, Coreopsis, Desmodium, Dianthera, Erigeron, Gillenia, Heracleum, Houstonia, Hydrophyllum, Krigia, Lepachys, Lobelia, Lythrum, Malva, Nepeta, Oxalis, Petalostemum, Polymonium, Psoralea, Pyenanthemum, Radicula, Scutellaria, Stachys, Taenidia, Teucrium, Verbena, Veronica and Zizia.

Names
Scientific source:

Supported by

Hosts · map
FamilyScientific name @ source (records)
A. newhart  623 @ JRYB__SHEN (2)
Amaryllidaceae  Allium stellatum @ AMNH_BEE (1)

Allium @ AMNH_BEE (2)
Asteraceae  Erigeron philadelphicus @ AMNH_BEE (2)

Erigeron @ AMNH_BEE (2)

Helianthus petiolaris @ AMNH_BEE (1)

Lactuca pulchella @ AMNH_BEE (2)

Senecio @ AMNH_BEE (1)
Boraginaceae  Borago officinalis @ UCRC_ENT (4)

Echium vulgare @ CUIC_ENT (1)

Phacelia dubia @ UCRC_ENT (2)
C. smith  672 @ JRYB__SHEN (1)
Campanulaceae  Campanula americana @ AMNH_BEE (1)
Elaeagnaceae  Elaeagnus umbellata @ AMNH_BEE (1)
Fabaceae  Amorpha canescens @ AMNH_BEE (1)

Baptisia tinctoria @ UCRC_ENT (3)

Baptisia @ AMNH_BEE (1)

Lupinus @ AMNH_BEE (1)

Melilotus albus @ CUIC_ENT (1)

Melilotus officinalis @ UCRC_ENT (3); CUIC_ENT (1)

Tephrosia virginiana @ UCRC_ENT (1)

Trifolium hybridum @ UCRC_ENT (3)

Trifolium repens @ CUIC_ENT (1)

Vicia caroliniana @ UCRC_ENT (1)
G. cangialosi  915 @ JRYB__SHEN (1)
Lamiaceae  Monarda pectinata @ UCRC_ENT (1)

Teucrium occidentale @ AMNH_BEE (1)
Onagraceae  Calylophus serrulatus @ AMNH_BEE (3)
Oxalidaceae  Oxalis violacea @ AMNH_BEE (1)
Plantaginaceae  Penstemon cobaea @ AMNH_BEE (3)

Penstemon gracilis @ AMNH_BEE (2)

Penstemon hirsutus @ AMNH_BEE (8); UCRC_ENT (9)

Penstemon @ AMNH_BEE (3)
Ranunculaceae  Ranunculus sp @ BBSL__ERR (1)
Rosaceae  Porteranthus trifoliatus @ UCRC_ENT (1)

Potentilla recta @ CUIC_ENT (1)

Rosa @ AMNH_BEE (1)

Rubus argentus @ UCRC_ENT (2)

Rubus flagellaris @ AMNH_BEE (1)

Rubus @ AMNH_BEE (5)
Scrophulariaceae  Penstemon angustifolius @ BBSL (21)

Penstemon grandiflorus @ BBSL (9)
_  Bee @ LAR (1)

Withheld @ BBSL (101)

apple @ NLA (1)

caneberry @ NLA (4)

cucurbit @ NLA (1)

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Updated: 2018-09-26 11:23:55 gmt
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