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Hylaeus modestus Say, 1837
Prosopis affinis_homonym Smith, 1853, male not female; Prosapis pennsylvanica Cockerell, 1896; Prosopis nucleolus Viereck, 1903; Prosopis sayi Robertson, 1904; Prosopis minyra Lovell, 1909; Prosopis binghami Lovell, 1910; Prosopis supracurta Swenk and Cockerell, 1910; Prosapis citrinifrons Cockerell, 1896; Prosapis rugosulus Cockerell, 1896; Prosapis rugosulus var fallax Cockerell, 1896; Prosopis rugulosus_sic Cockerell, 1896; Prosopis modestus var minyra Lovell, 1909; Hylaeus (Prosopis) modestus citrinifrons (Cockerell, 1896), valid subspecies; Prosopis modestus (Say, 1837); Prosopis modesta (Say, 1837)

Life   Insecta   Hymenoptera   Apoidea   Colletidae   Hylaeus
Subgenus: Prosopis

Hylaeus modestus, Mid-Atlantic Phenology
© Copyright source/photographer · 9
Hylaeus modestus, Mid-Atlantic Phenology

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Hylaeus modestus
© Copyright Hadel Go 2014-2015 · 9
Hylaeus modestus
Hylaeus modestus modestus Modest Masked Bee sensu stricto
© Copyright Hadel Go 2014-2015 · 9
Hylaeus modestus modestus Modest Masked Bee sensu stricto

Hylaeus modestus
© Copyright Hadel Go 2014-2015 · 9
Hylaeus modestus
Hylaeus modestus f
© Copyright Hadel Go 2014 · 8
Hylaeus modestus f

Hylaeus modestus f
© Copyright Hadel Go 2014 · 8
Hylaeus modestus f
Hylaeus modestus
© Copyright Hadel Go 2014-2015 · 8
Hylaeus modestus

Hylaeus modestus
© Copyright Hadel Go 2014-2015 · 8
Hylaeus modestus
Hylaeus modestus
© Copyright Hadel Go 2014-2015 · 8
Hylaeus modestus

Hylaeus modestus f
© Copyright Hadel Go 2014 · 7
Hylaeus modestus f
Hylaeus modestus modestus Modest Masked Bee sensu stricto
© Copyright Hadel Go 2014-2015 · 7
Hylaeus modestus modestus Modest Masked Bee sensu stricto

Hylaeus modestus modestus Modest Masked Bee sensu stricto
© Copyright Hadel Go 2014-2015 · 7
Hylaeus modestus modestus Modest Masked Bee sensu stricto
Hylaeus modestus FEM CFP comp
© Copyright Laurence Packer 2014 · 7
Hylaeus modestus FEM CFP comp

Hylaeus modestus MALE CFP f
© Copyright Laurence Packer 2014 · 7
Hylaeus modestus MALE CFP f
Hylaeus modestus f
© Copyright Hadel Go 2014 · 6
Hylaeus modestus f
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 5-7 mm.; black; antennae piceous above, ferruginous beneath; face marks yellow, triangular, filling area between clypeus and eyes, ending acutely on eye margin above antennae; collar and tubercles yellow; tegulae fuscous or blackish; wings subhyaline, veins and stigma fuscous; legs black, but tibiae yellow at base and spurs yellowish; face narrowed below; cheeks narrower than eyes in lateral view; facial foveae deep and distinct, linear, separated from eye by a very slightly wider space and only slightly divergent from eye above; scape slender, no wider than flagellum; very short, about half as long as broad; front coxae simple; dorsal area of propodeum short, about equal to metanotum, coarsely reticulate, metanotum more finely rugose; facial punctures below antennae minute, sparse and obscure, these deep, distinct and closely crowded above antennae; thoracic punctures deep and distinct, moderately coarse, close but not contiguous on scutum and scutellum, more widely separated but not sparse on pleura; abdomen shining, punctures exceedingly minute, but visible with high magnification, well separated on 1st and 2nd segments.

MALE—Length 4.5-7.0 mm.; black; antennae piceous above, ferruginous beneath, scape entirely black; mandibles and labrum black; tegulae brownish-ferruginous or piceous, not maculated; wings subhyaline, veins and stigma brownish-ferruginous; maculations yellow, as follows: entire face below antennae, supraclypea mark reaching to about mid line of antennal fossa, lateral face marks extending in a triangle slightly above antennae, more or less acute, tubercles, a line on each side of collar, a narrow line on anterior face of front tibiae, basal third of mid tibiae, basal half (or slightly less) of hind tibiae, all basitarsi and tibial spurs; apical tarsal segments and front tibiae in large part more reddish; femora black; face narrowed below; cheeks somewhat narrower than eyes in lateral view; scape rather slender, apex slightly broader than flagellum; basal segment of flagellum slightly broader than long, length and breadth of 2nd segment about equal, 3rd much longer than broad; front coxae simple; dorsal area of propodeum about as long as metanotum, coarsely reticulate, metanotum more finely but densely rugose; thoracic punctures deep and distinct, close and rather fine but not crowded on scutum, coarser and well separated on scutellum and pleura; basal segment of abdomen shining, very sparsely and minutely punctate medially, closer laterally, more close, deep and distinct, yet minute on 2nd segment, becoming still closer but more obscure on following segments.

DISTRIBUTION—This occurs throughout the entire Eastern United States and Eastern Canada, from Louisiana to Minnesota, east to the Atlantic seaboard, with the possible exception of Florida. It is in flight from May until September, according to records now at hand.

FLOWER RECORDS—Specimens have been recorded from the following: Acer, Achilea, Angelica, Apocynum, Aralia, Aruncus, Azalea, Castanea pumila, Ceanothus, Chrysanthemum, Crataegus, Cicuta maculata, Daucus carota, Erigeron, Eupatorium, Gerardia, Houstonia purpurea, Hydrangea, hex, Koellia, Pyracanthci, Rhus, Rosa, Rubus, Solidago, Spiraea and Zizia. Robertson (1929) records this species (as P. sayi) on the following additional genera: Amorpha, Arabis, Cacalia, Cornus, Rubphus, Geum, Heracleum, Lepiclium, Malva, Monarda, Osmorrhiza, Pastinaca, Ptelea, Pycnanthemum, Sanicula, Sium, Symphoricarpus, Taenidia and Thaspium.

From Mitchel (1960) - The females of H. modestus vary considerably in size, ranging from 5 mm to an extreme of 7 mm, and somewhat in extent of maculations, but are otherwise fairly constant. The males, however, are subject to much variation, and as a result, several names have been proposed for these differening forms. In size, they range from 4.5mm to 7mm. The scape varies in size, being quite slender in some individuals, very robust in others, and with all intergrading sizes evident in any extensive series. The pleural punctures also vary in their relative density, being quite close in some, rather sparse in others. The extent of the maculated areas varies most conspicuously. The mandibles and labrum may be entirely black, largely yellow, or with smaller yellow infusions. The lateral face marks may be abruptly truncate at the level of the antennae or may extend upward along the eye margin for some distance, and may be pointed on the eye margin or rounded above and slightly divergent. The collar may be largely yellow, or have only small yellow spots, or even be entirely black, and the tegulae may have large conspicuous yellow maculae, or small obscure spots, or none. The is no constant combination of these variations in any series studies so far that would indicate racial groups, except that there is a tendency for the yellow maculations to be extensive or limited, as the case may be, somewhat uniformly. Thus a specimen with maculated tegulae is likely to have a yellow collar, while one with a black collar usually has dark mandibles and tegulae, but there is no constancy in this, and all intergrades exist.

Scientific source:

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Hosts · map
FamilyScientific name @ source (records)
A. newhart  623 @ JRYB__SHEN (2)
Anacardiaceae  Rhus copallina @ UCMS_ENT (8); AMNH_BEE (3)

Rhus copallinum @ AMNH_BEE (2); UCMS_ENT (2)

Rhus glabra @ AMNH_BEE (13)
Apiaceae  Ammi majus @ UCMS_ENT (1)

Cicuta @ AMNH_BEE (1)

Cryptotaenia canadensis @ AMNH_BEE (2)

Daucus carota @ UCMS_ENT (28); AMNH_BEE (19); MLSB__N16- (14); I_HHGA (1)

Daucus @ AMNH_BEE (1)

Oxypolis occidentalis @ UCRC_ENT (12)

Oxypolis rigidior @ BBSL (7)

Petroselinum crispum @ I_HHGA (2)

Polytaenia nuttallii @ AMNH_BEE (1)

Sanicula marilandica @ AMNH_BEE (2)

Zizia aurea @ AMNH_BEE (16)

Zizia @ AMNH_BEE (1)
Apocynaceae  Apocynum androsaemifolium @ AMNH_BEE (9)

Apocynum cannabinum @ I_HHGA (1); AMNH_BEE (13)

Apocynum @ UCRC_ENT (2)
Aquifoliaceae  Ilex opaca @ AMNH_BEE (1); UCMS_ENT (3)

Ilex verticillata @ AMNH_BEE (4)
Asteraceae  Achillea millefolium @ UCMS_ENT (15)

Achillea sp @ BBSL (1)

Agoseris glauca @ RMBL_ENT (1)

Anaphalis margaritacea @ BBSL (1)

Antennaria @ AMNH_BEE (4)

Chrysanthemum leucanthemum @ UCMS_ENT (1)

Cirsium arvense @ RMBL_ENT (1); UCMS_ENT (1)

Hieracium caespitosum @ UCMS_ENT (1)

Leucanthemum vulgare @ UCMS_ENT (8)

Pluchea odorata @ UCMS_ENT (5)

Solidago gigantea @ AMNH_BEE (16)

Solidago rugosa @ UCMS_ENT (1)

Solidago sempervirens @ UCMS_ENT (1)

Solidago sp @ BBSL (2)

Solidago @ AMNH_BEE (10); UCRC_ENT (2)

Taraxacum campylodes @ RMBL_ENT (1); DART_ENT (1)

Taraxacum officinale @ BBSL (2)
Brassicaceae  Brassica nigra @ AMNH_BEE (1)

Lobularia maritima @ UCMS_ENT (2)
Caryophyllaceae  Stellaria graminea @ UCMS_ENT (1)
Convolvulaceae  Convolvulus arvensis @ UCMS_ENT (1)
Cornaceae  Cornus foemina @ AMNH_BEE (1)
Ericaceae  Calluna vulgaris @ UCMS_ENT (1)

Vaccinium stamineum @ AMNH_BEE (1)
Fabaceae  Melilotus officinalis @ AMNH_BEE (2)
G. cangialosi  915 @ JRYB__SHEN (3)
Geraniaceae  Geranium richardsonii @ DART_ENT (1); UCRC_ENT (1)

Geranium sp @ BBSL (1)
Hydrangeaceae  Hydrangea arborescens @ BBSL (1)
Hypericaceae  Hypericum perforatum @ UCMS_ENT (1)

Hypericum @ UCMS_ENT (1)
J. rykken  1024 @ JRYB__SHEN (1)

1029 @ JRYB__SHEN (1)

1048 @ JRYB__SHEN (2)

1060 @ JRYB__SHEN (1)

1064 @ JRYB__SHEN (1)

1088 @ JRYB__SHEN (1)

1101 @ JRYB__SHEN (1)

1117 @ JRYB__SHEN (2)

582 @ JRYB__SHEN (2)

672 @ JRYB__SHEN (14)

832 @ JRYB__SHEN (6)

913 @ JRYB__SHEN (4)

970 @ JRYB__SHEN (5)
K. kingsley  4020 @ JRYB__SHEN (1)
Lamiaceae  Lycopus sp @ UCMS_ENT (2)

Monarda @ AMNH_BEE (1)

Physostegia parviflora @ AMNH_BEE (1)
Oleaceae  Ligustrum vulgare @ UCMS_ENT (1)
P. clifton  672 @ JRYB__SHEN (1)
Plantaginaceae  Linaria vulgaris @ DART_ENT (1)
Ranunculaceae  Clematis virginiana @ AMNH_BEE (2)
Rhamnaceae  Ceanothus americanus @ AMNH_BEE (2)

Ceanothus @ AMNH_BEE (1)
Rosaceae  Aruncus aruncus @ AMNH_BEE (1)

Fragaria virginiana @ AMNH_BEE (2)

Malus pumila @ UCMS_ENT (1)

Pentaphylloides floribunda @ DART_ENT (1); RMBL_ENT (1)

Potentilla glandulosa @ UCRC_ENT (4); BBSL (1)

Potentilla gracilis @ BBSL (5)

Potentilla pulcherrima @ DART_ENT (1); RMBL_ENT (2)

Potentilla recta @ BBSL (1)

Potentilla sp @ AMNH_BEE (2); BBSL (1)

Rosa fendleri @ BBSL (1)

Rosa multiflora @ BBSL__BBSLID (2); AMNH_BEE (1)

Rosa rugosa @ UCMS_ENT (3)

Rubus laciniatus @ UCMS_ENT (3)

Rubus sp @ BBSL (1)

Rubus villosus @ AMNH_BEE (1)

Rubus @ UCMS_ENT (1); AMNH_BEE (4)

Spiraea alba @ AMNH_BEE (2)

Spiraea tomentosa @ AMNH_BEE (3)

Spiraea @ AMNH_BEE (1)
Rykken, j.  1113 @ JRYA__NOCA (2)

1299 @ JRYA__NOCA (2)

1322 @ JRYA__NOCA (1)

145 @ JRYA__NOCA (3)

1535 @ JRYA__OLYM (1)

1537 @ JRYA__OLYM (1)

1 @ JRYA__OLYM (1)
Saxifragaceae  Astilbe @ AMNH_BEE (1); UCRC_ENT (1)
Scrophulariaceae  Agalinis tenuifolia @ AMNH_BEE (1)

Chelone glabra @ BBSL (2)

Penstemon confertus @ BBSL (2)

Penstemon rydbergii @ BBSL (1)

Scrophularia californica @ UCRC_ENT (2)
Tamaricaceae  Tamarix @ AMNH_BEE (1)
Vitaceae  Psedera @ AMNH_BEE (1)
_  Sam @ PN- (11)

Withheld @ BBSL__YOSE (63); BBSL (111)

caneberry @ NLA (1)

cucurbit @ NLA (2)

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