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Megachile georgica Cresson, 1878
Megachile penicillata Cockerell, 1915; Gnathodon_homonym georgica (Cresson, 1878); Sarogaster georgica (Cresson, 1878); Chalicodoma (Chelostomoides) georgica (Cresson, 1878)

Life   Insecta   Hymenoptera   Apoidea   Megachilidae   Megachile
Subgenus: Chelostomoides

Megachile georgica, female, face
Smithsonian Institution, Entomology Department · 9
Megachile georgica, female, face

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Megachile georgica, female, side
Smithsonian Institution, Entomology Department · 9
Megachile georgica, female, side
Megachile georgica, female, top
Smithsonian Institution, Entomology Department · 9
Megachile georgica, female, top

Megachile georgica, female, wing
Smithsonian Institution, Entomology Department · 9
Megachile georgica, female, wing
Megachile georgica FEM f
© Copyright Laurence Packer 2014 · 7
Megachile georgica FEM f

Megachile georgica
© Copyright John Ascher, 2006-2014 · 6
Megachile georgica
Megachile georgica, female, mandibles
© NC Agriculture State Experiment Station Technical Bulletin Number 152, T. B. Mitchell, 1962 · 1
Megachile georgica, female, mandibles

Megachile georgica, female, face
© Stephanie Kolski and Natalie Allen · 1
Megachile georgica, female, face
Megachile georgica, female, side
© Stephanie Kolski and Natalie Allen · 1
Megachile georgica, female, side

Megachile georgica, female, top
© Stephanie Kolski and Natalie Allen · 1
Megachile georgica, female, top
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 12-13 mm.; abdomen elongate and parallel-sided; tegulae yellowishtestaceous and spurs yellow, otherwise entirely black; eyes subparallel; clypeal margin about straight, unmodified; mandibles broad apically, 4-dentate, without bevelled edges (fig. 60); lateral ocelli considerably nearer eyes than to margin of vertex; cheeks narrower than eyes; vertex shining, punctures deep and distinct, rather coarse and uniformly close; quite coarse and close on cheeks, becoming closer along posterior margin of eyes, irregular and rather sparse on lower surface adjacent to hypostome; punctures below anterior ocellus close, deep and distinct, becoming fine and crowded laterally, very close, deep and distinct on supraclypeal, area, coarse and crowded on clypeus above, becoming somewhat finer and more irregular apically; pubescence white, short but rather copious around antennae and on face laterally, thin and white on cheeks, becoming somewhat longer and more yellowish below, very short and somewhat tinged with yellow on clypeus and vertex; pubescence rather short, thin, entirely white on thorax laterally and posteriorly, dense around tuberdes and behind bases, very short, thin, largely pale and very inconspicuous on scutum and scutellum, a pair of anterior, slightly oblique, narrow lines of white tomentum on scutum, the scutello-mesothoracic suture narrowly tomentose; dorsum of thorax closely, deeply, rather finely and closely punctate throughout, punctures of pleura much coarser, with irregular, shining spaces evident; lateral faces of propodeum somewhat shining, but finely and closely punctate, posterior face somewhat more tessellate, punctures very shallow and irregular; all basitarsi considerably shorter and narrower than their tibiae; tegulae minutely and closely punctate; wings lightly infuscated, somewhat more deeply so apically, veins piceous; abdominal terga 2-4 with deep, transverse, basal grooves which are rather thinly pale tomentose, their basal margins sharply carinate, apical margins of terga quite deeply and abruptly depressed except on 2 medially, rather conspicuously white fasciate, this fascia broadly interrupted on 2 and narrowly so on 3; basal tergum with some erect, rather elongate, pale pubescence laterally, becoming very thin medially, lateral apical angles densely white tomentose, punctures rather sparse and shallow, becoming fine and close toward margin; discal pubescence of following terga very thin and inconspicuous, hardly evident, largely pale, punctures of 2-4 medially deep and distinct but rather fine and sparse, becoming somewhat coarser and closer at extreme sides; tergum 5 not definitely depressed nor grooved basally, apical margin quite deeply depressed but not fasciate, punctures deep, distinct and quite close, rather finely so toward base, more coarsely so toward apical margin, pubescence thin, short and erect, largely pale; tergum 6 very slightly convex in profile, but with an abrupt, apical lip, a considerable amount of pale, subappressed tomentum across base, this becoming fuscous toward apical margin, punctures very deep and distinct, very close, but rather coarse; sternum 6 well covered with short, black, scopal hairs, deeply and distinctly but irregularly punctate; scopa otherwise white, the sterna quite uniformly, closely, deeply and rather coarsely punctate, apical margins depressed and narrowly hyaline; no sternal fasciae evident.


MALE—Length 10-11 mm.; black, tegulae and front tarsi yellowish-testaceous, spurs yellow; eyes very slightly convergent below; median third of clypeal margin slightly in- curved; mandibles 3-dentate, inferior process somewhat nearer apex than base, subtriangular and rather small, the tip incurved; apical segment of flagellum very slightly dilated medially; lateral ocelli slightly nearer eyes than to margin of vertex; cheeks slightly narrower than eyes, with a very small, bare, concave area just below base of mandibles, otherwise lower margin densely long, white pubescent; vertex shining, punctures uniformly deep, and distinct, rather sparse and slightly separated, becoming somewhat more shallow but close and rather coarse on cheeks; face below ocelli with coarse and deep, crowded punctures, becoming minute and close laterally and on supraclypeal area, elypeus with an inconspicuous, median, sparsely punctate line, very closely and deeply punctate on each side; pubescence of face quite short but rather dense, entirely white, and white on cheeks, dense below, very thin above, vertex with thin and rather short, erect, more yellowish hairs; thorax with short, white pubescence laterally and posteriorly, dense around tubercles and behind wing bases, short, erect and very thin on dorsum, obscurely yellowish on scutum medially, with a pair of somewhat oblique, very narrow lines of tomentum anteriorly, and scutello-mesothoracic suture narrowly white tomentose; scutum closely and deeply punctate throughout, punctures somewhat coarser in center, finer laterally, those on scutellum somewhat finer and more widely separated but still quite close, those on axillae fine and very close; punctures of pleura much coarser but rather shallow, rather fine and densely crowded on venter, lateral faces of propodeum somewhat shining, but closely nud rather finely punctate, posterior face less shining, punctures shallow, becoming quite sparse near mid-line; front coxal spines rather slender and elongate, narrowly rounded at tip, the coxae largely bare anteriorly, very finely and irregularly punctate, without red bristles; front basitnrsus narrow at base but becoming broadly dilated apically, somewhat broader than its tibia, flattened but not excavated below, segment 2 much shorter but about as broadly dilated apically, with a brownish integumental spot beneath, 3rd and 4th segments quite short, slender and narrow, the 5th more elongate but definitely shorter than the hasitarsus, the more basal segments rather densely, short white pubescent, without a distinct posterior fringe; mid tibial spur well developed; mid and hind tarsi slender and unmodified, basitarsi much shorter than their tibiae; tegulae minutely and closely punctate; wings very lightly infuscated, veins brownish to piceous; abdominal terga 2-5 rather deeply grooved across base, grooves quite densely white tomentose, basal margins distinct, subcarinate, apical margins of terga depressed except on 2 medially, the depressed margins yellowishhyaline and densely white fasciate laterally except on 4, basal tergum with rather thin, erect, whitish pubescence, the lateral posterior angles densely white tomentose, punctures quite close and deep throughout; discal pubescence of following terga very short, thin and inconspicuous, hardly evident, whitish and somewhat more conspicuous toward basal grooves, becoming somewhat more blackish on apical terga; punctures of terga 2-4 deep and distinct, rather sparse medially, becoming close and coarse laterally, somewhat closer on 4, 5 densely white tomentose across base, but with short, erect but quite conspicuous, black pubescence, closely, deeply and rather coarsely punctate, apical margin very narrowly depressed, entirely black and not fasciate; tergum 6 densely, white tomentose across base, surface very finely and densely punctate, carina very low and inconspicuous, but with a rather broad, semicircular, median emargination, straight on each side, median teeth of apical margin low and carinate, considerably nearer the quite distinct and acute lateral angles than to each other, this area obscured with dense tomentum; tergum 7 rather inconspicuous, transverse, not at all produced medially; sternum 4 entirely retracted but unmodified; sterna 1-3 exposed, very closely, deeply and rather coarsely punctate, becoming somewhat more finely so toward apical margin of each, this rather broadly depressed on 2, more narrowly so on 3, with dense, apical fringes of rather elongate, white hairs; setose area of sternum 5 divided medially by a non-setose line, the setae fine and simple, numerous toward apical margin and median line (fig. 61); setose areas of sternum 6 broad and extensive, slightly separated medially, the setae flexed apically and rather robust, apical lobe very broad and broadly rounded; gonocoxites abruptly narrowed above base, then slightly dilated to the obliquely flexed and robust tips (fig. 62).

DISTRIBUTION—New Jersey to Florida and Texas, March to November.

FLOWER RECORDS—Afzelia, Amorpha, Baptisia, Chrysopsis, Clethra, Crotalaria, Erigeron, Galactia, Helenium, Hypericum, Lobelia, Melilotus, Pentstemon, Phaseolus, Psoraelea, Pyonanthemum, Stachys, Strophostyles, Tephrosia and Vaccinium. This is also recorded by Robertson (1929) on Desmodium.

Identification
The males have a large dark brown spot on the inside face of the tarsal segment just below the front basitarsal segment, this appears to be unique to this species.

Names
Scientific source:

Supported by

Hosts · map
FamilyScientific name @ source (records)
Fabaceae  Dalea candida @ BBSL (1)

Dalea pinnata @ I_JSA (1); AMNH_BEE (12)

Lespedeza bicolor @ BBSL (1)

Tephrosia virginiana @ AMNH_BEE (1)

Tephrosia @ UCRC_ENT (2)
Lamiaceae  Clinopodium ashei @ AMNH_BEE (1)
Verbenaceae  Verbena simplex @ BBSL (1)

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Updated: 2019-01-20 15:20:09 gmt
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