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Eucera hamata (Bradley, 1942)
Tetralonia hamata Bradley, 1942; Synhalonia hamata (Bradley, 1942)

Life   Insecta   Hymenoptera   Apoidea   Apidae   Eucera
Subgenus: Synhalonia

Eucera hamata, Mid-Atlantic Phenology
© Copyright source/photographer · 9
Eucera hamata, Mid-Atlantic Phenology

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Eucera hamata MALE comp
© Copyright Laurence Packer 2014 · 7
Eucera hamata MALE comp
Eucera hamata, female, hooked tibial spur
© Copyright Deana Crumbling 2010 · 1
Eucera hamata, female, hooked tibial spur

Eucera hamata, male, hooked tibial spur
© Copyright Deana Crumbling 2010 · 1
Eucera hamata, male, hooked tibial spur
Eucera hamata, Barcode of Life Data Systems
Barcode of Life Data Systems · 1
Eucera hamata, Barcode of Life Data Systems

Eucera hamata, female, faceclose
© Mary Paul · 1
Eucera hamata, female, faceclose
Eucera hamata, female, face
© Mary Paul · 1
Eucera hamata, female, face

Eucera hamata, female, scopal hairs simple
© Mary Paul · 1
Eucera hamata, female, scopal hairs simple
Eucera hamata, male, top
© Mary Paul · 1
Eucera hamata, male, top

Eucera hamata, male, side
© Mary Paul · 1
Eucera hamata, male, side
Eucera hamata, male, face
© Mary Paul · 1
Eucera hamata, male, face

Eucera hamata, female, top
© Mary Paul · 1
Eucera hamata, female, top
Eucera hamata, female, side
© Mary Paul · 1
Eucera hamata, female, side

Eucera hamata, female, face
© Mary Paul · 1
Eucera hamata, female, face
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 16-17 mm., breadth of abdomen 5.5-6.5 mm.; black, the antennal flagella piceous beneath, blackish above; mandibles becoming obscurely yellowish apically; legs somewhat reddish-piceous, apical tarsal segments becoming more testaceous, spurs pale testaceous; tegulae yellowish-hyaline and transparent; wings subhyaline basally, becoming lightly clouded apically, veins pale testaceous to piceous; cheeks subequal to eyes in width; clypeus strongly protuberant its median length about half the distance between eyes; eyes subparallel; mandibles rather blunt and entire apically; basal segment of flagellum about one half times longer than segment 2; mid and hind tibial spurs abruptly hooked or reflexed apically; clypeus quite coarsely and closely punctate above, punctures becoming somewhat more distinctly separated below laterally; labrum with rather fine and very close punctures medially, these becoming somewhat coarser and more sparse laterally; supraclypeal area impunctate medially, becoming rather closely punctate on each side, lateral areas of face below level of antennae very closely and finely punctate, surface above antennae with somewhat more definitely separated but still rather fine and close punctures; cheeks rather dull beneath the pubescence, very finely and quite closely punctate; posterior half of scutum somewhat shining, punctures quite coarse, deep and close, becoming much finer and closer laterally and anteriorly; scutellum more finely and quite closely punctate except for the narrow, anterior margin which is shining and impunctate; pleura dull, very finely and closely punctate throughout; posterior face of propodeum somewhat shining, punctures very fine, shallow and obscure, rather sparse, dorsal area becoming finely rugose along upper margin, more striate at each extreme side, lateral faces dull, finely and quite closely punctate; basal abdominal tergum quite closely and distinctly punctate across basal half, punctures well separated medially, becoming very fine and close laterally, the broad, apical, impressed area shining and impunctate; basal area of tergum 2 very finely and closely punctate, but this covered in large part by dense tomentum, apical impressed area largely shining and impunctate, but invaded slightly by very minute, scattered punctures; basal area of tergum 3 apparently finely and closely punctate, but largely obscured by dense tomentum, about half of apical impressed area also minutely and rather closely punctate, only the rather narrow, apical rim entirely impunctate; surface of terga 4 and 5 entirely obscured by dense tomentum; pygidium rather broadly triangular, apex rather narrowly rounded; pubescence long and copious, entirely pale ochraceous on head, thorax and legs, scopa pale ochraceous; basal abdominal tergum with rather copious, elongate, pale ochraceous or whitish pubescence across basal half, disc with a very small amount of subappressed, dark pubescence at extreme sides; tergum 2 with a narrow basal area of dense fuscous pubescence, partially hidden by preceding tergum, followed by a band of dense, white tomentum that barely reaches margin of apical impressed area which is bare, forming a rather conspicuous, transverse fascia; tergum 3 with a basal, fuscous, tomentose band, followed by a band of white tomentum that partially covers the apical impressed area, apical half of this bare; tergum 4 largely fuscous tomentose across disc, apical impressed area entirely white tomentose; and disc of tergum 5 fuscous tomentose basally, apical impressed area densely white tomentose at sides, but mere narrowly brownish-tomentose medially; tergum 6 more brownish pubescent on each side.


MALE—Length 13.5-14.5 mm., breadth of abdomen 5-5.5 mm.; black, clypeus and labrum entirely yellow, supraclypeal area narrowly yellow over margin of clypeus, the mandibles more or less yellowish apically, flagella brownish-piceous, tarsal segments of legs becoming brownish-testaceous, spurs pale yellowish, tegulate yellowish-hyaline; wings subhyaline, becoming very faintly infuscated apically, veins testaceous to piceous; cheeks very slightly narrower than eyes; clypeus quite strongly protuberant, its median length considerably greater than half the distance between eyes; eyes subparallel; mandibles obscurely hi-dentate apically; shorter side of basal segment of flagellum fully twice the length of pedicel, segment 2 three times longer; mid and hind tibial spurs abruptly hooked or reflexed apically; punctures of clypeus quite coarse and deep, close above and laterally, becoming somewhat separated toward apex medially, obscure on the yellow surface, those on labrum much finer and closer medially, becoming rather sparse on each side; supraclypeal area largely impunctate, lateral areas of face below antennae dull, finely, closely and rather obscurely punctate, surface above antennae closely and finely punctate, but a limited area laterad of lateral ocelli shining and impunctate; cheeks very finely and closely punctate beneath dense pubescence; median posterior area of scutum somewhat shining, punctures rather fine, somewhat separated becoming close laterally and anteriorly, and more narrowly across posterior margin; scutellum shining, punctures somewhat finer and quite close throughout; pleura dull, very finely and closely punctate throughout; posterior face of propodeum dull and tessellate, punctures shallow but quite close, dorsal area dull, becoming rather coarsely and shallowly reticulate along upper margin, lateral faces dull, finely and rather closely punctate; discs of abdominal terga finely and rather closely and uniformly punctate across basal areas, punctures becoming somewhat more minute and more widely separated on apical impressed areas, only the narrow, apical margins impunctate; punctures of basal tergum somewhat coarser and deeper than on the others, becoming increasingly fine on the more apical terga; tergum 6 with a rather pronounced angle on each extreme side; pubescence quite copious and elongate, entirely pale ochraceous on head, thorax, legs and basal abdominal tergum; tergum 2 with abundant, erect but rather thin pale pubescence across base, apical impressed area fuscous pubescent, hairs somewhat decumbent; terga 3 and 4 with short, pale, rather thin, suberect tomentum across basal areas, with interspersed longer, erect, black hairs, margin of impressed area thinly whitish fasciate, rims becoming black pubescent; basal area of tergum 5 black pubescent, impressed apical area almost completely covered with whitish tomentum, forming a rather broad, subapical fascia, the rim narrowly bare, but without dense black pubescence; tergum 6 black pubescent basally, with a broad, whitish, apical fascia and elongate white hairs at each side; pubescence of tergum 7 more yellowish on each side of pygidial plate; median length of pygidial plate slightly greater than basal width, margins carinate, slightly converging apically to the rather abruptly constricted, broadly rounded apex; sterna 7 and 8 (fig. 89) and genital armature (fig. 88) as shown.


DISTRIBUTION — Wisconsin to Maryland, south to Mississippi and Georgia, April to August.
FLOWER RECORDS — Brassica, Robinia, Rubus, Salvia, Trifolium and Vicia. Robertson (1929) records this species (as dilecta Cresson) on the following: Aesculus, Asclepias, Astragalus, Baptisia, Blephilia, Camassia, Capsella, Cardamine, Cercis, Claytonia, Collinsia, Commandra, Convolvulus, Cornus, Crataegus, Delphinium, Dianthera, Dodecatheon, Ellisia, Fragaria, Geranium, Gymnocladus, Heracleum, Hydrophyllum, Iris, Krigia, Lithospermum, Lithrum, Lobelia, Melilotus, Mertensia, Monarda, Nepeta, Oenothera, Oxalis, Pentstemon, Petalostemum, Phlox, Podophyllum, Polemonium, Prunus, Ptelea, Pyrus, Ranunculus, Ribes, Rosa, Ruellia, Salix, Scutellaria, Senecio, Stellaria, Tradescantia, Verbena, Verbesina, Viburnum, Viola, Vitis and Zizia.

Names
Scientific source:

Supported by

Hosts · map
FamilyScientific name @ source (records)
Boraginaceae  Lithospermum canescens @ BBSL (1)
Fabaceae  Astragalus @ AMNH_BEE (5)

Baptisia leucantha @ BBSL (1)

Medicago sp @ BBSL (2)
J. rykken  1028 @ JRYB__SHEN (2)

1029 @ JRYB__SHEN (1)
Lythraceae  Lythrum alatum @ BBSL (1)
Scrophulariaceae  Penstemon grandiflorus @ BBSL (1)
_  blueberry @ NLA (2)

cucurbit @ NLA (2)

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Updated: 2018-06-21 01:19:39 gmt
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