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Hoplitis albifrons (Kirby, 1837)
Chelostoma albifrons Kirby, 1837; Monumetha borealis Cresson, 1864; Monumetha obsoleta Cresson, 1864; Megachile oblonga Provancher, 1882; Monumetha argentifrons Cresson, 1864; Osmia maura Cresson, 1878; Andronicus hesperius Cockerell, 1903; Hoplitis (Monumetha) albifrons albifrons (Kirby, 1837); Hoplitis (Monumetha) albifrons argentifrons (Cresson, 1864); Hoplitis (Monumetha) albifrons maura (Cresson, 1878); Hoplitis (Alcidamea) albifrons argentifrons (Cresson, 1864), valid subspecies; Hoplitis (Alcidamea) albifrons maura (Cresson, 1878), valid subspecies

Life   Insecta   Hymenoptera   Apoidea   Megachilidae   Hoplitis
Subgenus: Alcidamea

Hoplitis albifrons FEM mm x f
© Copyright Laurence Packer 2014 · 7
Hoplitis albifrons FEM mm x f

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Hoplitis albifrons MALE mm - f
© Copyright Laurence Packer 2014 · 7
Hoplitis albifrons MALE mm - f
Hoplitis albifrons, f, back, Mariposa CA
© Copyright source/photographer · 5
Hoplitis albifrons, f, back, Mariposa CA

Hoplitis albifrons, f, face, Mariposa CA
© Copyright source/photographer · 5
Hoplitis albifrons, f, face, Mariposa CA
Hoplitis albifrons, f, right, Mariposa CA
© Copyright source/photographer · 5
Hoplitis albifrons, f, right, Mariposa CA

Hoplitis albifrons, m, left, Mariposa, CA
© Copyright source/photographer · 5
Hoplitis albifrons, m, left, Mariposa, CA
Hoplitis albifrons
Hartmut Wisch · 1
Hoplitis albifrons

Hoplitis albifrons
Hartmut Wisch · 1
Hoplitis albifrons
Hoplitis albifrons, Barcode of Life Data Systems
Barcode of Life Data Systems · 1
Hoplitis albifrons, Barcode of Life Data Systems

Hoplitis albifrons, male, antenna
© NC Agriculture State Experiment Station Technical Bulletin Number 152, T. B. Mitchell, 1962 · 1
Hoplitis albifrons, male, antenna
Hoplitis albifrons maura
© Copyright John Ascher, 2006-2014 · 1
Hoplitis albifrons maura

Hoplitis albifrons maura
© Copyright John Ascher, 2006-2014 · 1
Hoplitis albifrons maura
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 11-13 mm.; entirely black; face much longer than distance between eyes; eyes subparallel; lateral ocelli nearer each other than to eyes, and much nearer eyes than to margin of vertex; clypeus broadly convex, apical margin quite strongly out-curved, but median third or fourth narrowly produced and very slightly incurved, the margin of this area polished and impunctate; mandibles broad apically, 4-dentate; width of cheeks about twice that of eyes; wings subhyaline basally, becoming lightly infuscated apically, veins and stigma piceous; tegulae brownish-piceous, smooth and shining; legs entirely black, front spurs hyaline in part, mid and hind spurs black; pubescence rather thin but somewhat elongate, rather copious and pale around antennae, becoming somewhat blackish on vertex and clypeus, cheeks below, on pleura and over most of legs; pubescence largely pale on scutum, scutellum and posterior face of propodeum; abdominal tergum 1 largely pale pubescent, 2 pale pubescent in part, 3-6 largely black pubescent, 1 and 2 subfasciate apically toward sides; scopa entirely blackish; punctures fine and rather close over most of head and thorax, becoming somewhat more widely separated on vertex medially and on scutum posteriorly; abdominal terga shining, punctures minute and widely separated medially, interspaces being many times diameter of punctures, these becoming much closer toward the extreme lateral margins, tergum 5 more closely punctate, 6 with fine, crowded punctures, with a narrow, rounded, apical lip; sternum 6 triangularly pointed medially.

MALE Length 9 mm.; entirely black; face nearly twice as long as distance between eyes; eyes subparallel; lateral ocelli slightly nearer eyes than to each other, slightly nearer each other than to margin of vertex; median segments of flagellum about as broad as long, apical segment more elongate, tapering apically (fig. 23); clypeus only slightly convex, broadly produced apically, nearly as long as the greatest breadth, apical margin nearly straight; mandibles bi-dentate; cheeks somewhat broader than eyes; wings hyaline at extreme base, becoming lightly infuscated apically, veins and stigma piceous; tegulae piceous, smooth and shining, with scattered, minute puncture evident; legs entirely black, anterior spurs more yellowish-hyaline, mid and hind spurs piceous or black; tergum 7 much broader than long, rather broadly rounded apically, with a submedian, depressed area; sterna 1-5 exposed, smooth and shining in large part, 1 and 2 each with a median, apical, spine-like projection, with only a few scattered punctures, 6-8 retracted, form as shown(fig. 24); genital armature as shown; pubescence of head and thorax largely pale, rather thin but somewhat elongate, subappressed between antennae and eyes, clypeus with dense, appressed tomentum; legs with short, black pubescence except for the pale posterior fringe on front tarsi; abdomen not fasciate, discal pubescence of the terga extremely short, thin and inconspicuous, tergum 6 sometimes obscurely fasciate apically.

DISTRIBUTION British Columbia to Maine and Nova Scotia, north to Hudson Bay and Alaska, May to August.

FLOWER RECORD Phacelia.

There are two additional forms of albifrons occurring in the West, argentifrons (Cresson) and maura (Cresson)


Names
Scientific source:

Supported by

Hosts · map
FamilyScientific name @ source (records)
Apocynaceae  Apocynum sp @ BBSL (1)
Asclepiadaceae  Asclepias eriocarpa @ BBSL__BERK (1)
Asteraceae  Arnica fulgens @ BBSL (1)

Chaenactis sp @ BBSL (2)

Cirsium callilepis @ BBSL__KWC (1)

Cirsium sp @ BBSL__KWC (2); BBSL__PUB (1); BBSL (6)

Cirsium undulatum @ BBSL (1)

Erigeron speciosus @ BBSL (3)

Eriophyllum lanatum @ BBSL__BERK (1)

Eriophyllum sp @ BBSL__KWC (1)

Grindelia sp @ BBSL (1)

Heterotheca villosa @ DART_ENT (1)

Hulsea sp @ BBSL__KWC (1)

Senecio triangularis @ BBSL (3)

Senecio @ UCRC_ENT (1)

Silybum marianum @ BBSL (3)

Taraxacum officinale @ BBSL (1)

Taraxacum sp @ BBSL__BBSLID (1)
Boraginaceae  Cryptantha intermedia @ UCRC_ENT (6)

Cryptantha sp @ BBSL__KWC (3)

Cynoglossum officinale @ BBSL (1)

Echium vulgare @ CUIC_ENT (1)

Eriodictyon parryi @ UCRC_ENT (1)

Eriodictyon trichocalyx @ UCRC_ENT (5)

Eriodictyon @ AMNH_BEE (1)

Nemophila menziesii @ UCRC_ENT (2)

Phacelia californica @ UCRC_ENT (1)

Phacelia davidsonii @ UCRC_ENT (1)

Phacelia distans @ UCRC_ENT (3)

Phacelia heterophylla @ UCRC_ENT (10)

Phacelia @ UCRC_ENT (2)
Brassicaceae  Stanleya pinnata @ UCRC_ENT (1)

Stanleya sp @ BBSL (1)

Thelypodium laciniatum @ BBSL (1)
Cactaceae  Opuntia sp @ BBSL (1)
Capparaceae  Cleome serrulata @ BBSL (2)

Cleome sp @ BBSL (1)
Caprifoliaceae  Lonicera interrupta @ UCRC_ENT (1)
Convolvulaceae  Calystegia macrostegia @ I_JSA (2)

Calystegia sp @ BBSL (3)
Crassulaceae  Sedum lanceolatum @ BBSL (1)
Epialtidae  Mimulus sp @ BBSL__BERK (1)
Ericaceae  Arctostaphylos nevadensis @ BBSL__PUB (1)
Fabaceae  Acmispon glaber @ UCRC_ENT (1)

Acmispon nevadensis @ UCRC_ENT (3)

Astragalus sp @ BBSL (2)

Hedysarum alpinum @ BBSL (3)

Hedysarum boreale @ BBSL (6)

Lotus scoparius @ BBSL (1)

Lotus sp @ BBSL__KWC (3)

Lupinus sp @ BBSL__KWC (1); BBSL (2)

Medicago sp @ BBSL (1)

Melilotus officinalis @ BBSL (1)

Melilotus sp @ BBSL (2)

Trifolium hybridum @ RMBL_ENT (1)

Trifolium pratense @ BBSL (2)

Trifolium repens @ BBSL (3)

Vicia sp @ BBSL (1)
Gentianaceae  Frasera speciosa @ BBSL (2)

Frasera @ CUIC_ENT (1)
Geraniaceae  Geranium fremontii @ UCRC_ENT (1)
Hydrophyllaceae  Eriodictyon sp @ BBSL__KWC (2)

Nama rothrockii @ BBSL__KWC (1)

Phacelia distans @ BBSL__BERK (1)

Phacelia hastata @ BBSL (1)

Phacelia heterophylla @ BBSL__KWC (11)

Phacelia imbricata @ BBSL__KWC (3)

Phacelia leptosepala @ BBSL (7)

Phacelia sp @ BBSL__BBSLID (1); BBSL__KWC (15); BBSL__PUB (1); BBSL (15)
Lamiaceae  Agastache urticifolia @ RMBL_ENT (1)

Marrubium vulgare @ BBSL (1)
Liliaceae  Allium sp @ BBSL (1)
Linyphiidae  Collinsia sp @ BBSL__KWC (1)
Malvaceae  Sidalcea oregana @ BBSL (1)
Onagraceae  Chamerion augustifolium @ DART_ENT (1)

Clarkia cylindrica @ BBSL__BERK (1)

Clarkia dudleyana @ BBSL__KWC (1)

Clarkia gracilis @ BBSL__BERK (1)

Clarkia sp @ BBSL__KWC (4); BBSL (5); BBSL__BERK (1)

Clarkia speciosa @ BBSL__BERK (1)

Clarkia unguiculata @ BBSL (4); BBSL__BERK (3); UCRC_ENT (3)

Clarkia xantiana @ CUIC_ENT (23)

Clarkia @ AMNH_BEE (1); UCRC_ENT (1)

Epilobium sp @ BBSL (1)
Papaveraceae  Eschscholzia californica @ BBSL (1)
Pinaceae  Pinus flexilis @ UCRC_ENT (1)
Polemoniaceae  Aliciella mcvickerae @ UCRC_ENT (1)
Polygonaceae  Eriogonum sp @ BBSL__PUB (1); BBSL__LAKU (4)
Rosaceae  Cercocarpus montanus @ BBSL (2)

Horkelia sp @ BBSL__KWC (1)

Potentilla glandulosa @ UCRC_ENT (1)

Potentilla gracilis @ BBSL (2)

Potentilla sp @ BBSL__KWC (2)

Prunus virginiana @ BBSL (3)

Rosa nutkana @ BBSL (5)
Scrophulariaceae  Collinsia heterophylla @ BBSL__KWC (2)

Penstemon confertus @ BBSL (2)

Penstemon cyananthus @ BBSL (4)

Penstemon harringtonii @ BBSL (1)

Penstemon kingii @ BBSL (1)

Penstemon patricus @ BBSL (1)

Penstemon sp @ BBSL (9)
_  Withheld @ BBSL__YOSE (183); BBSL (697); BBSL__ZION (43); BBSL__PINN (83)

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Updated: 2024-07-15 17:01:05 gmt
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