Thomas Onuferko · 9
Epeolus scutellaris, Axillae mesoscutellum female |
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Thomas Onuferko · 9
Epeolus scutellaris, Dorsal view female neotype |
Thomas Onuferko · 9
Epeolus scutellaris, Lateral view female neotype |
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Thomas Onuferko · 9
Epeolus scutellaris, Lateral view male |
Thomas Onuferko · 9
Epeolus scutellaris, Pseudopygidial area female |
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© Copyright Laurence Packer 2014
· 7
Epeolus scutellaris FEM CFP comp |
© Copyright Laurence Packer 2014
· 7
Epeolus scutellaris MALE mm x f |
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Michael Veit · 6
Epeolus scutellaris, f on Helian -- |
Michael Veit · 6
Epeolus scutellaris, f on Helian -- |
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Michael Veit · 6
Epeolus scutellaris, f on Helian -- |
Michael Veit · 6
Epeolus scutellaris, f on Helian -- |
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Michael Veit · 6
Epeolus scutellaris, f on Solida -- |
Michael Veit · 6
Epeolus scutellaris, m on Solida -- |
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Thomas Onuferko · 5
Epeolus scutellaris, mm X |
Thomas Onuferko · 5
Epeolus scutellaris, mm X |
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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. This species most closely resembles E. pusillus,
but can be easily distinguished as follows: mesopleuron of male
not entirely obscured by white tomentum (unlike in E. pusillus),
but with sparsely hairy circle occupying much of ventrolateral
half; and T5 with pseudopygidial area of female wider (apex 2
x medial length) than in E. pusillus (apex <2 x medial length).
For a comprehensive list of secondary distinguishing features
and similarities to E. pusillus, see diagnosis for E. Dusillus.
Distribution in Canada: Atlantic and Central Canada (Map
13).
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 9-10 mm.; black, antennal scape, legs and tegulae testaceous, mandibles, tubercles, narrow margin of the pronotum, lateral margins of scutum, and entire scutellum and axillae, ferruginous, mid and hind spurs rather dark; space between margin of vertex and lateral ocelli slightly less than their diameter; cheeks about half width of eyes, subcarinate posteriorly, somewhat more narrowed below; median length of labrum somewhat more than half the breadth, with a pair of small, subapical tubercles; inner margin of mandibles with a low, median angle; posterior margin of scutellum nearly straight, very shallowly impressed medially, axillae extensive, subtriangular, broadly joined to lateral margins of scutellum, subcarinate laterally, tips protruding somewhat beyond its posterior margin (fig. 110); wings with the usual three submarginal cells, subhyaline basally, becoming lightly infuscated apically, veins brownish-testaceous; face pale tomentose around bases of antennae, otherwise very thinly pubescent; venter of thorax and anterior face of mesopleura densely tomentose, posterior margin of pronotum, a pair of narrow longitudinal lines on scutum anteriorly, metanotum and adjacent margin of scutellum, all pale yellowish tomentose, tubercles fringed with the same color; abdominal terga 1-4 with transverse, apical, yellow tomentose fasciae, very slightly interrupted medially on 1 and 2, entire on 3 and 4, slightly separated from apical margin on 1-3; tergum 1 with yellow tomentum basally, interrupted medially, interveining black patch very broad, extending nearly from one extreme side to the other, basal and apical yellow tomentose areas very narrowly joined at each extreme side; tegulae with quite deep and slightly separated punctures anteriorly, these becoming much more minute and close posteriorly; vertex and upper part of face rather coarsely and very closely and deeply punctate, the punctures becoming minute and densely crowded over clypeus and lower half of face, those on checks close but distinct, not crowded; scutum, scutellum and axillae densely and rather coarsely rugoso-punctate throughout, somewhat more coarsely so on latero-anterior areas; pleura closely punctate below but with a few irregular, shining, intervening spaces evident, becoming densely rugose above; punctures of abdominal terga very fine and uniformly close throughout, finer and more densely crowded on tergum 5, this with a transverse, apical band of pale tomentum covering about half of disc and completely enclosing the pseudopygidium which is broad and quite short, median length slightly less than half the apical width.
MALE�Answers quite fully to description of female, but scutellum either red or black; pygidial plate quite broadly rounded, margin carinate, median length about equal to basal width, surface rather smooth but with some inconspicuous, suberect pubescence.
DISTRIBUTION � Minnesota to Nova Scotia, south to Texas and North Carolina; June (in Texas) to September.
FLOWER RECORDS�Baccharis, Bidens and Solidago.
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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 6 to 7.5 mm; labrum reddish orange to black; clypeus black or dark mahogany; antenae brownish mahogany, except scape, pedicel, flagellomere 1 often with reddish orange markings; legs reddish orange, often with mahogany markings on coxae, trochanters, femora; thorax black to reddish mahogany, except pronotal lobes, tegulae, scutellum, axillae, antero-lateral corners of scutum often reddish orange; metasomal tergites black to mahogany or reddish orange; clypeus with short, sparse, silvery hairs, or often nude; antennal (ossae bordered by dense, silvery, appressed pubescence; vertex with few, erect , silvery hairs ; pronotum posterior� face of scutellum, metanotum with sparse to dense, off-white, squamiform pubescence; mesopleuron dorsally, lateral margins of posterior face of propodeum with sparse to dense, subsilvery hairs,
nearly nude ventrally; scutum with erect coppery to silvery
hairs, except white on all margins, two antero-median, longitudinal lines, hairs diffuse between median lines and antero-lateral margins, of scutum, or with scutum weakly pubescent to nearly
nude; mbtasomal tergite 1 with white to yellowish pubescence, ~xcept plack antero-laterally, large, transverse band on disc; tergite 11 with apical fascia often slightly broadened laterally; tergites: II, IV with fasciae broadened laterally; tergite V with sparse pubescence anterior, lateral to pseudopygidium; sternite V with a long, golden to silvery apical fimbria; pseudopygidium nearly twice as broad as long; clypeus finely, closely punctate0 punctures somewhat elongate at apex, interspaces larger laterally; frons, vertex, scutum, scutellum, mesopleuron moderately rugoso-punctate, interspaces rarely larger than average puncture diameter; propodeal enclosure moderately rugose dorsally, finely, irregularly, transversely striate medially; remainder of posterior face of propodeum finely, closely rugoso-punctate laterally, nearly impunctate medially with few shallow punctures between irregular, oblique striae; forewings with three submarginal cells, subhyaline basally, more pubescent, darker apically, veins dark ferruginous to mahogany; labrum often with pronounced longitudinal, carinae extending from subapical tubercles; preoccipital ridge elevated, angulate dorsally forming a transverse fourths as broad as long; axillae large, extending beyonf posteriarcuate on uter margins; scutellum with deep, often broad, median emargination.
Male. Length 6 to 8 mm; forewing length 5 to 7 mm; Much the same as female but differing as follows: flagellomere II nearly as broad as long; face, mesopleuron often more densely pubescent ; antennae often entirely mahogany; sternites IV , V with subapical rows of long, dense, golden to coppery hairs, often darkend apically; pygidium large, narrowed apically, reddish orange to mahogany, widely, shallowly punctured.
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. The following morphological features in combination (excluding any that
are specific to the opposite sex of the one being diagnosed) can be used to tell E.
scutellaris apart from all other North American Epeolus: the pronotal collar is predominantly black; the axilla is large, with the tip extending to or beyond the band of
pale tomentum along the posterior margin of the mesoscutellum, dilated laterally, and
ferruginous to some degree whereas the mesoscutellum ranges from entirely black to
entirely ferruginous; the mesopleuron is closely (most i<1d) and evenly punctate and
obscured by white tomentum only in the upper half (with a large, sparsely hairy circle
occupying much of the ventrolateral half); the T1–T3 apical fasciae are complete or
only very narrowly interrupted medially; and the pseudopygidial area of the female
is lunate with the apex clearly >2 × the medial length. Epeolus scutellaris resembles E.
basili, E. nebulosus, E. novomexicanus, and E. pusillus in that the axilla is large, with the
lateral margin arcuate, and that the apical fasciae are complete or only very narrowly
interrupted medially. However, in E. scutellaris the pseudopygidial area of the female
is wider (the apex ~2.5–3 × the medial length) than in the four members of the “pusillus group” (the apex clearly <2.5 × the medial length). In all four members of the
“pusillus group”, the mesopleuron of the male (excluding the hypoepimeral area) is
entirely obscured by white tomentum and lacks the sparsely hairy circular area present
in both sexes of E. scutellaris. Epeolus scutellaris is most similar to E. packeri in terms of
surface sculpture and structure, but in E. packeri the pronotal collar is predominantly
ferruginous, the T1 basal fascia is absent or reduced to a pair of small patches of pale
tomentum, and the T1–T3 apical fasciae are interrupted medially and commonly reduced to discrete lateral patches. Epeolus scutellaris is also similar to E. andriyi and E.
howardi, but in E. andriyi and E. howardi the T1–T3 apical fasciae are distinctly interrupted medially, and the pseudopygidial area of the female is lunate with the apex <2
× the medial length.
Description. This species was recently redescribed (Onuferko 2017).
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Updated: 2024-04-25 05:08:37 gmt
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