|
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 8 mm; forewing length 5 to 6 mm; labrum reddish orange to mahogany; clypeus reddish orange apically; antennae reddish orange to mahogany; thorax black, except reddish on pronotal lobes lateral margins on scutum, mesopleuron below, scutellum, axillae, laterally on posterior face of propodeum; metasomal tergites I , II reddish, remaining tergites often black or darkened; face with appressed, subsilvery pubescence around antennal fossae, sparser on frons, vertex; pronotum, metanotum with appressed, whitish pubescence; scutum with sparse subsilvery pubescence, denser on lateral margins, antero-medially; mesopleuron nearly nude, few hairs above; metasomal tergite I with whitish pubescence, except sparse, black pubescence on a large, transverse band on disc; tergites II, III, IV with apical whitish fasciae; tergite V with black hairs bordering pseudopygidium; sternite V with a moderately long, silvery, regular, apical fimbria; pseudopygidium approximately three times broader than long; clypeus with fine, contiguous punctures, somewhat elongate
on apical margin; frons above, vertex with larger, coarser punctures; scutum, scutellum axillae, mesopleuron rugoso-punctate, interspaces larger on mesopleuron below; propodeal enclosure rugose dorsally, finely, irregularly, transversely striate medially; lateral areas of posterior face of propodeum coarsely, closely punctate; forewings with three submarginal cells, hyaline, nearly nude basally, more pubescent apically, veins mahogany; flagellomere II about two-thirds as broad as long; preoccipital ridge terminates before joining hypostomal carina and is rounded at its dorsal margin behind compound eye; apical portion of metasomal tergites (underlying fasciae) weakly depressed; axillae distinctly arcuate on lateral margins and extend well beyond essentially horizontal dorsal face of scutellum, tips strongly bent away from sides of scutellum and finely pointed; scutellum with a narrow, rather deep, median emargination; metanotum with at most a small, median, blunt projection.
Male. Length 6 to 7 mm; forewing length 4 to 5 mm; Much the same as female but differs as follows: scutum, mesopleuron black to deep reddish mahogany, scutellum axillae black or red; face more densely pubescent, particularly clypeus; scutum, mesopleuron nearly uniformly pubescent; mesopleuron uniformly punctate below; flagellomere II approximately as broad as long ; sternites IV, V with subapical rows of long, coppery to silvery hairs, reduced medially; pygidium reddish orange, broadly rounded apically, with large, widely spaced punctures.
Epeolus compactus Cresson
Female. (figs. 13, 18, 24). Length 6 to 11 mm; forewing length 5.5 to 7,5 mm; labrum reddish orange to black, clypeus black; scape, pedicel, flagellomere I often reddish orange, remaining segments black to mahogany; pronotal lobes, tegulae light reddish orange; tibiae, tarsi reddish orange, coxae, trochanters, femora reddish orange to black or mahogany; metasomal tergites black, apices clear; pygidium light to dark reddish orange; clypeus basally, sometimes apically, with sparse, appressed, off-white pubescence, more dense around antennal foassae; vertex with sparse, erect, long, off-white hairs around ocelli; pronotum, metanotum, posterior face of scutellum with appressed whitish or yellowish pubescence; s c u t u m with whitish or yellowish pubescence on lateral, posterior margins; scutal disc with sparse, white or pale coppery pubescence, two off-white, antero-median lines united posteriorly enclosing a
black trangular area or with a quadrate patch of two broad, contiguous bands; mesopleuron nude or with scattered hairs ventrally, a dense, median band of appressed whitish pubescence , often sparsely hairy dorsally; metasomal tergite I with whitish or yellowish pubescence , except with black on a vari able, transverse band on disc, postero-medially, often antero-laterally; tergites II , III , IV with apica l whitish or yellowish hair band broadened laterally, often interruoted medially; sternite V with short golden or dark ferruginous fimbria ; pseudopygidium about twice as broad as long; clYPeus with fine , dense punctures , interspaces larger along apical margin; vert ex with coarse, irregular punctures anteriorly, more dense posteriorly; scutum weakly rugose; . scutellum slightly more coarsely punctured than scutum; lower one half of mesopleuron coarsely punctured, punctures often separated by more than one puncture diameter; propodeum moderately rugose dorsally, finely rugose medially, minutely roughened otherwise; forewings with three submarginal cells, with rather evenly spaced, erect hairs basally, strongly darkened apically, veins ferruginous to black; f l agellomere II about two- thirds as broad as long ; axillae prominent , pointed apically; not arcuate on lateral margins; scutellum with a broad, often deep, median emargination.
Male. Length 6 to 10 mm; forewing length 6 to 7 mm; Answers to description of female in general but flagellomere II nearly as broad as long; pygidium broadly rounded apically, reddish orange to black, flanged laterally, distally, irregularly punctured ; sternites IV, V with subapical row of long, golden to coppery hairs , often darkenrl apically.
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. compactus apart from all other North American Epeolus except E. canadensis and E. ferrarii:
in females, F2 is at least 1.2 × as long as wide; the mesoscutum has a small anteromedial patch of pale tomentum; the axilla is small to intermediate in size, not extending
much beyond the midlength of the mesoscutellum (extending to <2/3 its length) but
the free portion is more than 1/4 as long as the entire medial length of the axilla, and
the axilla (except sometimes the tip) and mesoscutellum are black; the mesopleuron is closely (most i<1d) and evenly punctate; and the T2 fascia lacks lobe-like anterolateral
extensions of tomentum, although it may be broader laterally. Epeolus compactus is
most similar to E. ferrarii, and in both species the T1 discal patch is typically quadrangular with the basal and apical fasciae subparallel and separated by a distinct longitudinal band, but in E. ferrarii the T2–T4 fasciae are not broadened medially into rounded
lobes (as in E. compactus) but evenly broad or tapering until separated medially. Epeolus
canadensis differs from both species in that the T1 discal patch is distinctly triangular
or semicircular (the basal fascia is conspicuously arched and fully continuous with
the longitudinal band) and its medial longitudinal extent is more than 1/3 the lateral
extent. In E. compactus, the medially-interrupted T1 basal and apical fasciae may be
so broad laterally that they are joined, resulting in a diamond shape but with concave
sides; in E. canadensis the lateral sides are straight or convex.
|
