Thomas Onuferko · 9
Epeolus autumnalis, Axillae mesoscutellum female |
Click on map for details about points.
|
80x5 -
240x3 -
240x4 -
320x1 -
320x2 -
320x3 -
640x1 -
640x2
Set display option above.
Click on
images to enlarge. |
Thomas Onuferko · 9
Epeolus autumnalis, Dorsal view female |
Thomas Onuferko · 9
Epeolus autumnalis, Lateral view female |
|
Thomas Onuferko · 9
Epeolus autumnalis, Lateral view male |
© Copyright Laurence Packer 2014
· 7
Epeolus autumnalis FEM mm x f |
|
© Copyright Laurence Packer 2014
· 7
Epeolus autumnalis MALE mm x f |
Michael Veit · 6
Epeolus autumnalis, f on Solidag -- |
|
Michael Veit · 6
Epeolus autumnalis, f on Solidag -- |
Michael Veit · 6
Epeolus autumnalis, m on Anaphal -- |
|
Michael Veit · 6
Epeolus autumnalis, m on Anaphal -- |
Tom Murray · 5
Epeolus autumnalis, Tom Murray B |
|
Tom Murray · 5
Epeolus autumnalis, Tom Murray |
Thomas Onuferko · 5
Epeolus autumnalis, F mm comp |
|
Thomas Onuferko · 5
Epeolus autumnalis, mm X |
Thomas Onuferko · 5
Epeolus autumnalis, mm X |
|
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 autumnalis is an eastern species that can
readily be identified by the following combination of features:
mesopleuron closely and evenly punctate; axilla and
mesoscutellum all black; and axilla large, but not conspicuously
diverging from side of mesoscutellum, and tip extending well
beyond midlength of mesoscutellum but not attaining apex.
Specimens of E. autumnalls may attain a relatively large size
(>10 mm). In this respect, in its overall dark colouration, and in
general appearance, the species resembles E. lectoides.
However, the integument of E. lectoides is much shinier, due in
part to larger interspaces, and both species exhibit numerous
other structural differences. Epeolus autumnalis is much more
akin to a dark E. scutellaris, but in E. scutellaris the axilla is
larger, ferwginous to some degree, and attains or surpasses
the line of pale tomentum demarcating the posterior margin of
the mesoscutellum.
Distribution in Canada: Atlantic and Central Canada (Map 3).
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, legs testaceous to yellowish in large part, tegulae testaceous, tubercles and mandibles more ferruginous, spurs yellow; lateral ocelli separated from margin of vertex by a space about equal to their diameter; cheeks very narrow, subcarinate posteriorly, becoming still narrower below; labrum nearly as broad as the median length, deeply grooved at apex between a pair of carinae, ending in pronounced tubercles; inner margin of mandible with a distinct, median angle; posterior margin of scutellum broadly and vaguely impressed medially, axillae robust, united with lateral margins of scutellum for nearly their entire length, lateral margins carinate and slightly thickened, tips not exceeding posterior margin of scutellum (fig. 110); wings with the usual three submarginal cells, lightly infuscated, veins brownish-testaceous; face with very fine, pale tomentum below, becoming somewhat more elongate and erect above, quite dense between antennal fossae and margin of eyes; pronotum densely yellow tomentose and tubercles with a marginal fringe of yellow tomentum; scutum with a pair of narrow, longitudinal lines of yellow tomentum anteriorly; metanotum and adjacent border of scutellum densely yellow tomentose, and lateral areas of propodeum above densely tomentose; abdominal tergum 1 densely yellow tomentose basally, this continuous laterally with a transverse, subapical, yellow tomentose fascia which is slightly interrupted medially and slightly removed from margin toward the mid-line, the resulting black patch broad, transverse, slightly narrowed at each extreme side; terga 2-4 with transverse, yellow fasciae which are entire, slightly narrowed medially on 2, and slightly removed from apical rims on 2 and 3,tergum 5 with a patch of yellow tomentum on each side of pseudopygidium; punctures close, deep and rather coarse on upper part of face, vertex and cheeks, becoming very fine and quite densely crowded on clypeus and lower portions of face below antennae; tegulae closely, deeply and rather finely punctate throughout; scutum, scutellum and axillae rather coarsely rugose, pleura more finely rugoso-punctate above, lower half with definite shining interspaces between the more distinctly separated punctures; discs of abdominal terga quite deeply, finely and closely punctate, the punctures quite uniform, to considerable degree obscured by dark, appressed tomentum, finer and more densely crowded on tergum 5; pseudopygidium rather extensive, median length about half the apical width.
MALE�Answers quite fully to description of female, but front of face more densely pale tomentose, upper part of pleura quite densely covered with cream-colored tomentum, venter densely covered with silvery tomentum, the femora and hind tibiae darker; pygidium slightly broader at base than the median length, broadly rounded apically, margin cannate, surface rather closely and shallowly pitted.
DISTRIBUTION�Minnesota to Maine, south to North Carolina; September and October.
FLOWER RECORDS�Aster and Haplopappus. Robertson (1929) records this species on Bidens, Helianthus, Rudbeckia and Solidago.
|
|
|
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 8 to 10 mm; forewing length 6.5 to 7.5 mm; ;abrum, clypeus, scape, pedicel, flagellomere I mahogany to black, remaining flagellomeres dull, brownish mahogany; pronotal lobes, integument of metasoma mahogany to black; tegulae light reddish organge; legs dark reddish orange to mahogany, except apices of femora, tibiae, tarsi light reddish organfel thoraz black, often mahogany on mesopleuron, sternum; pygidium dark reddish organge; clypeus nude or with few short, appressed, off-white hairs basally; lateral margins of antennal fossae with fairly dense, appressed, off-white pubescence; vertex with few scattered, erect, white
to coppery hairs; pronotum, posterior face scutellum, metanotum with appressed whitish to yellowish pubescence; scutum with weakly defined posterior, lateral margins of pale pubescence; scutal disc with coppery hairs, except two poorly defined, antero-median, longitudinal bands of off-white pubescence; mesopleuron with few, off-white hairs posterior to pronotal lobes, beneath tegulae, posterior margin, essentially nude otherwise; metasomal tergite I with dense whitish or yellowish pubescence, except black or mahogany antero-laterally, large transverse band on disc, often postero-medially; tergites II, III, IV with broad, yellow, apical hair bands broadened laterally ; sternite V with a moderately long, golden to coppery apical fimbria; pseudopygidium poorly defined anteriorly, essentially flat in lateral view; punctures of clypeus fine, dense, more irregular laterally on apical margin, impunctate t riang l e medially on epistomal suture ; frons above with larger, deeper, sparser punctures; vertex with coarse, dense punctures laterally ; scutum, scutellum rugoso-punctate; mesopleuron with upper one half covered with small, dense punctures, lower one half more coarsely punctured, interspaces often more than a puncture diameter; propodeal enclosure weakly rugose dorsally, finely, irregularly, transversely striate medially; remainder of posterior face of propodeum with large, shallow punctures , often between widely spaced , oblique striae; forewings with three submarginal cells, subhyaline basally, darker apically, veins ferruginous to mahogany; antennae long, flagellomere II two thirds as broad as long ; axillae long , nearly attaining posterior margin of essentially horizontal dorsal face of scutellum, slight concavity near base, carinate on lateral margin; scutellum with weak median emargination.
Male. Length 8 to 11 mm; forewing length 6.5 to 8 mm; Fits description of female in general but differs as follows: flagellomere II slightly more than two-thirds as broad as long; face often covered with appressed, silvery pubescence; upper one half
of mesopleuron with uniform covering of sparse , silvery pubescence ; sternites IV, V weakly emarginate medially, with a subapical row
of long, yellowish to coppery, often black tipped hairs; pygidium broadly rounded apically, rugoso-punctate to sparsely 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 can be used to tell E.
autumnalis apart from all other North American Epeolus: the axilla is large, with the tip extending well beyond the midlength of the mesoscutellum but not as far back as its posterior
margin, dilated laterally, and like the mesoscutellum black; the mesopleuron is closely (i≤1d)
and evenly punctate; the T1 discal patch is so wide that the longitudinal band is barely visible in dorsal view; and the T2 fascia lacks lobe-like anterolateral extensions of tomentum,
although a few sparsely scattered pale hairs are sometimes present. Epeolus autumnalis is
similar to E. scutellaris in terms of surface sculpture and the patterns of pubescence on the
mesosoma and metasoma, but in E. scutellaris at least the axilla is partially to entirely ferruginous (as is often the mesoscutellum), and the axilla is more elongate, extending to or
beyond the band of pale tomentum along the posterior margin of the mesoscutellum.
|
|
|
Names | |
|
|
| Supported by | |
Updated: 2024-04-25 10:12:40 gmt
|
