Thomas Onuferko · 9
Epeolus bifasciatus, Axillae mesoscutellum female |
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Thomas Onuferko · 9
Epeolus bifasciatus, Dorsal view female |
Thomas Onuferko · 9
Epeolus bifasciatus, Head frontal view female |
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Thomas Onuferko · 9
Epeolus bifasciatus, Lateral view female |
Thomas Onuferko · 9
Epeolus bifasciatus, Lateral view male |
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© Copyright Hadel Go 2014 · 9
Epeolus bifasciatus |
© Copyright Hadel Go 2014 · 9
Epeolus bifasciatus |
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© Copyright Hadel Go 2014 · 8
Epeolus bifasciatus |
© Copyright Laurence Packer 2014
· 7
Epeolus bifasciatus MALE CFP |
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Michael Veit · 6
Epeolus bifasciatus, f on Physal -- |
Michael Veit · 6
Epeolus bifasciatus, f on Physal -- |
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Michael Veit · 6
Epeolus bifasciatus, f Phys leaf -- |
Michael Veit · 6
Epeolus bifasciatus, m on Stachy -- KA |
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© Copyright Sheryl Pollock 2011
· 5
Epeolus bifasciatus, Cuckoo Bee |
© Copyright Sheryl Pollock 2011
· 5
Epeolus bifasciatus, Cuckoo Bee |
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Overview | |
Extracted with permission from: Onuferko, T.M. 2017. Cleptoparasitic Bees of the Genus Epeolus Latreille (Hymenoptera: Apidae) in Canada. Canadian Journal of Arthropod Identification No. 30: March 30, 2017. doi:10.3752/cjai.2017.30
http://cjai.biologicalsurvey.ca/o_30/o_30.html
Diagnosis. Epeolus bifasciatus is unmistakeable among
Canadian species of the genus, and both sexes can be readily
identified by each of the following features that is diagnostic for
the species in Canada: frontal area with pair of conspicuous
granulose protrusions, each located near upper mesal margin
of compound eye; punctures dense, but those of head and
mesosoma sparser in some areas, larger, deep, and distinct;
dorsal surface of pronotum long and distinctly angulate on
anterior margin; mesoscutum without pale tomentum; and
bright yellow tomentum on dorsal surface of mesosoma and
metasoma.
Distribution in Canada: Central Canada (Map 4).
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 7-8 mm.; black, basal segments of antennae testaceous, segments 2 and beyond of flagellum more brownish-piceous; mandibles and labrum more reddish; legs testaceous, hind spurs piceous, mid spurs somewhat darker, the front spurs pale testaceous; pronotum, tubercles, tegulae, scutellum and axillae reddish-testaceous, and disc of basal abdominal tergum more or less red beneath the tomentum; lateral ocelli separated from margin of vertex by a space somewhat greater than their diameter; cheeks very narrow, hind margin carinate, strongly narrowed below; median length of labrum slightly less than basal width, apical tubercles very low and inconspicuous; inner margin of mandibles with a very low and inconspicuous, submedian angle; scutellum rather evenly rounded posteriorly, axillae robust, tips rather strongly divergent from sides of scutellum, lateral margins subcarinate (fig. 110); wings with the usual three submarginal cells, quite deeply infuscated, veins brownish-piceous; pubescence in general very short and inconspicuous, venter of thorax with a small amount of dense, white tomentum along mid-line; pronotum densely covered with bright yellow, appressed tomentum; disc of basal abdominal tergum largely covered with dense yellow tomentum, and tergum 2 yellow tomentose across the apical impressed area, the more apical terga not fasciate; a dense, transverse band of cream- colored tomentum on metanotum just below scutellum; punctures quite fine and close but deep and quite distinct on head, densely crowded between lateral ocelli and top of each eye, but with a conspicuous, impunctate elevation just below this, adjacent to eye margin; pleural punctures very coarse, deep and well separated or sparse below, becoming quite close above, those on scutum quite regularly distributed, coarse and close, becoming somewhat coarser posteriorly, those on scutellum very coarse but rather shallow, as those on axillae; punctures of abdominal terga rather fine but very close, deep and distinct, becoming somewhat finer on impressed, apical areas, tegulae with very fine, close punctures along inner side, these disappearing toward outer margin; pseudopygidium very short but quite broad across apical margin of tergum 5.
MALE�Resembles female in all respects other than the sexual differences. The pygidium is rather broadly sub-truncate, quite coarsely and closely punctate, the margin cannate.
DISTRIBUTION � Northern Mexico, Colorado and Minnesota, to the New England states and Florida; February to April in Florida, June to September in the North.
FLOWER RECORDS � Asclepias, Cirsium, Coreopsis, Erigeron, Helianthus, Melilotus, Nepeta, Rudbeckia and Vernonia. Robertson (1929) records bifasciatus also on Aster, Bidens, Boltonia, Dianthera, Eryngium, Eupatorium, Heliopsis, Lepachys, Lythrum, Petalostemum, Pycnanthemum, Solidago, Trifolium, Verbena and Verbesina.
HOST�Probably Colletes latitarsis.
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E. bifasciatus exhibits juch color variation throughout its range in North America. Populations
from the Midwest and Northeast, where it is common, generally have BLACK legs, labrum, clypeus, p
ropodeum, and pygidium. Peripheral populations in the Southeast are usually dark, burnt red in t
he above mentioned characters, whereas populations from the Southwest tend to be reddish orange.
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Identification | |
Extracted from: Brumley R.L., (1965). A Revision of the Bee Genus Epeolus Latreille of Western America North of Mexico. All Graduate Theses and Dissertations. 2682
Female. Length 7 to 9 mm; forewing length 5.5 to 7 mm; labrum reddish orange, often darkened basally, medially; clypeus reddish orange to black or mahogany; scape, pedicel, flagellomere I reddish orange, remaining flagellomeres reddish orange to mahogany; legs reddish orange to coppery, often with variable black markings; pronotum, scutellum, axillae, tegulae, anterolateral corners of scutum reddish orange; scutal disc black; propodeum yellowish orange to black; mesopleuron, metasomal tergites, pygidium reddish orange to black or mahogany; face with appressed, off-white pubescence around antennal fossae; clypeus, vertex with but few erect, whitish hairs; pronotum,metanotum, with dense, appressed, whitish or yellowish pubescence; mesopleuron with irregular border of a few whitish or yellowish hairs, nude otherwise; metasomal tergite I with a broad, basal, entire band of yellowish pubescence overlying reddish orange integument; tergite II with a narrow, apical band of yellowish pubescence overlying darker integument; remaining tergites with few whitish or yellowish hairs, occasionally weakly fasciate; apical fimbria of sternite V with long , coppery hairs of unequal lengths, darkened at base ; pseudopygidi um poorly defined but usually twice as broad as long; clypeus finely rugose-punctate; punctures larger , deeper between large , granulate , dull tubercles
on upper mesal margins of compound eyes; vertex densely rugosapunctate between lateral ocelli and transverse depression behind posterior margin of compound eye ; scutal disc , scutellum, axillae, upper one half mesopleuron coarsely, deeply rugosa-punctate with large punctures; lower one half mesopleuron with large, shiny interspaces larger than a puncture diameter on some areas; propodeal enclosure moderately rugose dorsally, finely, irregularly, transversely striate medially; remainder of posterior face of propodeum impunctate medially, with coarse, irregular, oblique striae, extreme lateral margins with shallow, dense punctures; forewings with three submarginal cells , entirely fulvous , somewhat darker apically, veins mahogany; flagellomere II two-thirds as broad as long ; anterior , lateral faces of mesopleuron separated by an irregular carina; posterior portion of mesopleuron often
with a carina extending from postero-dorsal margin of metacoxal carina totvards pronotal lobes; frontal carina with a more uniform slope, not abrupt between antennal fossae; metanotum often
with a blunt, median tooth; axillae prominent but not attaining posterior margin of essentially horizontal dorsal face of scutellum, slightly arcuate on a lateral margin; scutellum weakly emarginate medially, tvith a rugose depression around postero-ventral margin.
Male� Length 7 to 9 mm; forewing length 6 to 7 mm; In general this sex agrees tvith description of female but differs as follows: flagellomere II more than three-fourths as broad as long; sternites IV, V with a subapical row of long, golden to coppery hairs; pygidium subtruncate apically, shallowly, sparsely punctured, dark reddish orange to black.
Extracted from: Onuferko TM (2018). A revision of the cleptoparasitic bee genus Epeolus Latreille for Nearctic species, north of Mexico (Hymenoptera, Apidae). ZooKeys 755: 1–185. https://doi.org/10.3897/zookeys.755.23939
Diagnosis. Unique to E. bifasciatus among North American species of Epeolus are each
of the following morphological features: the frontal area bears a pair of granulose protrusions, each located near the upper mesal margin of the compound eye; the pronotal collar
is elongate, dilated laterally to about 2 × the medial length in dorsal view; and the dorsum of the metasoma has at most two bright orange-yellow fasciae (usually a basal fascia
on T1 and always an apical fascia on T2). Similar species occur in Mexico and Central
America, but their occurrence in Canada and the United States has not been confirmed.
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Updated: 2024-04-23 07:54:29 gmt
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