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Osmia georgica Cresson, 1878
Osmia (Gnathosmia) louisianae Cockerell, 1910; Gnathosmia georgica (Cresson, 1878); Osmia (Chalcosmia) georgica Cresson, 1878

Life   Insecta   Hymenoptera   Apoidea   Megachilidae   Osmia
Subgenus: Helicosmia

Osmia georgica, Mid-Atlantic Phenology
© Copyright source/photographer · 9
Osmia georgica, Mid-Atlantic Phenology

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Osmia georgica FEM CFP comp
© Copyright Laurence Packer 2014 · 7
Osmia georgica FEM CFP comp
Osmia georgica MALE mm .x f
© Copyright Laurence Packer 2014 · 7
Osmia georgica MALE mm .x f

Osmia georgica, F, Back, Carroll Co. MD ---.. ZS PMax
© Copyright source/photographer · 5
Osmia georgica, F, Back, Carroll Co. MD ---.. ZS PMax
Osmia georgica, F, Face, Carroll Co. MD ---.. ZS PMax
© Copyright source/photographer · 5
Osmia georgica, F, Face, Carroll Co. MD ---.. ZS PMax

Osmia georgica, F, Side, Carroll Co. MD ---.. ZS PMax
© Copyright source/photographer · 5
Osmia georgica, F, Side, Carroll Co. MD ---.. ZS PMax
Osmia georgica, f, back, Talbot Co, MD ---.
© Copyright source/photographer · 5
Osmia georgica, f, back, Talbot Co, MD ---.

Osmia georgica, f, face, Talbot Co, MD ---.
© Copyright source/photographer · 5
Osmia georgica, f, face, Talbot Co, MD ---.
Osmia georgica, f, side, Talbot Co, MD ---.
© Copyright source/photographer · 5
Osmia georgica, f, side, Talbot Co, MD ---.

Osmia georgica, m, back, Maryland ---.
© Copyright source/photographer · 5
Osmia georgica, m, back, Maryland ---.
Osmia georgica, m, face, Maryland ---.
© Copyright source/photographer · 5
Osmia georgica, m, face, Maryland ---.

Osmia georgica, m, right side, Maryland ---.
© Copyright source/photographer · 5
Osmia georgica, m, right side, Maryland ---.
Osmia georgica, f, back, Talbot Co, MD ---.
© Copyright source/photographer · 5
Osmia georgica, f, back, Talbot Co, MD ---.

Osmia georgica, f, face, Talbot Co, MD ---.
© Copyright source/photographer · 5
Osmia georgica, f, face, Talbot Co, MD ---.
Osmia georgica, f, side, Talbot Co, MD ---.
© Copyright source/photographer · 5
Osmia georgica, f, side, Talbot Co, MD ---.
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 9 mm.; dark blue, with greenish tints on abdominal terga; face very slightly longer than distance between eyes above; eyes very slightly convergent below; lateral ocelli subequally distant from eyes and margin of vertex, slightly nearer each other; clypeus very short, apical margin hardly produced, with a median, carinate, apical elevation, which does not protrude beyond the apical margin, area on each side rather deeply excavated (fig. 30); labrum rather densely pubescent over upper half and laterally, median length slightly exceeding basal width, subtruncate apically; upper face mandible with a robust, sub-basal, erect, flared protuberance, which partially covers apical margin of clypeus when mandibles closed, dentate margin with a pair of apical teeth an inner, more elongate, bevelled edge; cheeks considerably broader than eyes; wings very lightly infuscated, 2nd recurrent vein reaching 2nd submarginal cell slightly nearer apex than 1st does to base; tarsal segments simple and unmodified, mid and hind spurs piceous; pubescence, including scopa, entirely whitish, rather dense over front of face and clypeus, and around wing bases, otherwise and inconspicuous; punctures deep and distinct in general, quite coarse and close but crowded on vertex and cheeks, becoming crowded below ocelli, densely and finely crowded on clypeus; scutum somewhat more sparsely punctate in center of disc, punctures distinct not widely separated on scutellum; pleura rather dull, with densely crowded punctures, lateral faces of propodeum minutely and densely punctate or subreticulate, posterior face densely tessellate, punctures becoming more irregular and obscure, dorsal area smooth densely tessellate, becoming narrowly striate along upper margin; punctures rather and distinctly but not widely separated on abdominal terga 1-3, becoming finer and closer toward sides, rather uniformly close across 45, minute and densely crowded on 6, apical margins of all narrowly depressed and finely punctate to the rims.


MALE Length 7.5 mm.; deep blue; face somewhat longer than distance between eyes above; eyes somewhat convergent below; lateral ocelli subequally distant from eyes, each other, and margin of vertex; clypeus only very slightly convex, apical margin slightly produced, nearly straight; median length of labrum approximately equal to basal width; mandibles bidentate; cheeks somewhat broader than eyes; wings subhyaline, 2nd recurrent vein reaching 2nd submarginal cell much nearer apex than 1st does to base; tarsal segments slender and simple, anterior margin of hind basitarsi with a very robust, submedian tooth; mid and hind spurs brownish-testaceous; pubescence entirely whitish, rather dense around antennae and over part of face, on cheeks below, on thoracic sternum, with a rather prominant posterior fringe on front and mid femora, elsewhere rather thin and very inconspicuous, punctures quite deep and distinct, very close in general, rather coarse, close and distinct on vertex and cheeks, but becoming densely crowded below ocelli, around antennae and on clypeus; punctures rather coarse and almost crowded over most of scutum and scutellum, pleura dull with densely crowded and rather coarse punctures, but hypoepimeral area just beneath tegulae somewhat shining and more sparsely punctate; lateral faces propodeum rather dull, punctures shallow and obscure but rather close, posterior face dull and finely tessellate, punctures hardly evident, dorsal area smooth but tessellate, becoming very finely striate along upper margin; punctures of abdominal terga close, deep and distinct, rather coarse on the more basal terga, distinctly but not widely separated on terga 1-3, somewhat closer on 4 and 5, distinctly but not widely separated over most of apical margins of all narrowly depressed, punctures becoming obsolescent toward rims; apical margin of tergum 6 with a small, median emargination, 7 narrowly produced, this area with a deep, rounded emargination; sternum 2 broadly rounded apically, largely covering sternum 3 and base of 4, sternum, quite similar to that of inermis (fig. 33), rather broadly angulate apically, margin somewhat thickened and deeply grooved (fig. 34); sterna 5-8 entirely retracted; genital armature as shown (fig. 35).


DISTRIBUTION Massachusetts to Michigan, south to Georgia and Texas, March to August.
FLOWER RECORDS Aronia, Brassica, Chrysanthemum, Claytonia, Erigeron, Fragaria, Geranium, Hycirangea, Linaria, Lupinus, Malus, Ranunculus, Rubus, Salix, Senecio and Vicia. It is recorded by Robertson (1929) on Cardamine, Coreopsis and Krigia.

Names
Scientific source:

Supported by

Hosts · map
FamilyScientific name @ source (records)
A. newhart  623 @ JRYB__SHEN (1)
Asteraceae  Aster @ LACM_ENTB (3)

Chrysanthemum leucanthemum @ BBSL (1)

Coreopsis lanceolata @ MLSB__N16- (1)

Erigeron philadelphicus @ BBSL (1)

Erigeron pulchellus @ AMNH_BEE (2); UCRC_ENT (1)

Packera anonyma @ UCRC_ENT (1)

Packera aurea @ AMNH_BEE (2); UCRC_ENT (1)

Packera glabella @ EMEC (6); LACM_ENTB (1)

Rudbeckia sp @ BBSL__BBSLID (1)

Senecio anonymus @ BBSL (8)

Senecio aureus @ BBSL__BBSLID (1)
Boraginaceae  Phacelia dubia @ UCRC_ENT (1)
Brassicaceae  Barbarea vulgaris @ UCRC_ENT (1)
G. cangialosi  1031 @ JRYB__SHEN (3)
Geraniaceae  Geranium maculatum @ UCRC_ENT (1)
J. rykken  1026 @ JRYB__SHEN (2)

670 @ JRYB__SHEN (1)

737 @ JRYB__SHEN (2)

983 @ JRYB__SHEN (4)
Rosaceae  Fragaria sp @ BBSL (1)

Fragaria virginiana @ AMNH_BEE (1)

Malus domestica @ AMNH_BEE (1)

Potentilla @ UCRC_ENT (1)

Rubus @ LACM_ENTB (3)
_  apple @ NLA (4)

blueberry @ NLA (6)

caneberry @ NLA (3)

cucurbit @ NLA (2)

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Updated: 2019-08-25 15:25:39 gmt
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