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Andrena asteris, F, Face, WV, Hampshire County |
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Andrena asteris, F, side, WVa |
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Andrena asteris, Male, Side, MD, Prince Georges Co |
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Andrena asteris, F, Back, WV, Hampshire County |
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Andrena asteris, F, Face, WV, Hampshire County |
© Copyright Laurence Packer 2014
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Andrena asteris FEM CFP comp |
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© Copyright Laurence Packer 2014
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Andrena asteris MALE CFP comp |
Michael Veit · 6
Andrena asteris, f on Syphytotri -- |
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© Copyright source/photographer
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Andrena asteris, Male, Face, MD, Prince Georges Co |
© Copyright source/photographer
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Andrena asteris, Male, Side, MD, Prince Georges Co |
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Mitchell, Bees of the Eastern United States, Vol. I, 1960 · 1
Andrena asteris, figure24i |
Mitchell, Bees of the Eastern United States, Vol. I, 1960 · 1
Andrena asteris, figure25a |
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Mitchell, Bees of the Eastern United States, Vol. I, 1960 · 1
Andrena asteris, figure26 |
Mitchell, Bees of the Eastern United States, Vol. I, 1960 · 1
Andrena asteris, figure28 |
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Overview |
Reprinted with permission of the University of Nebraska State Museum from:
LaBerge, W. E. 1967. A revision of the bees of the genus Andrena of the Western Hemisphere. Part I. Callandrena (Hymenoptera: Andrenidae). Bulletin of the University of Nebraska State Museum 7: 1-316.
Please report text errors to: leah at discoverlife dot org.
This medium-sized Callandrena is closely related to A. simplex. The female of asteris can be told from that of simplex by its larger size, longer facial fovea, medially flattened (or even slightly depressed) clypeus, more complete propodeal corbicula and hairier thorax. The male is readily distinguished from that of simplex by the small yellow parocular maculae (rare in simplex), its larger size and hairier thorax.
FEMALE. MEASUREMENTS AND RATIOS. — N = 20; length, 12-14 mm; width, 3.5-4.5 mm; wing length, M = 4.15 ± 0.229 mm; FL/FW, M = 0.96 ± 0.004; FOVL/FOVW, M = 2.62 ± 0.032.
INTEGUMENTAL COLOR. — Black except as follows: flagellar segments 4-10 often dark red below; tergal apices slightly translucent, rufescent; wing membranes slightly infumate; tegulae piceous.
STRUCTURE. — Scape equal in length to flagellar segments 1-4; flagellar segment 1 subequal to segments 2 plus 3 or slightly shorter, segment 2 subequal to segment 3 and both shorter than 4. Eye, malar space, mandibles, and galeae as in simplex. Maxillary palpus barely reaching tip of galea, segments in ratio of about 1.3:1.3:1.0; 0.8:0.8:1.1. Labial palpus as in simplex but segments in ratio of about 1.9:1.0:0.8:0.8. Labral process as in simplex. Clypeus flattened to slightly depressed medially, protruding beyond eyes by somewhat more than one-third its own length (less than half); punctures round, small, becoming smaller peripherally and sparse mediobasally, in median flattened area separated mostly by one puncture width or slightly less; surface moderately shiny to dull, with regular, rather coarse tessellation. Supraclypeal area with indistinct minute punctures and coarse, irregular tessellation dulling surfaces. Genal area equals about one and one-half times width of eye, with minute to small punctures separated by one to two puncture widths (smaller near eye), surface shiny near eye, dulled posteriorly by coarse reticulotransverse shagreening. Vertex above lateral ocellus equal to about one ocellar diameter, tessellate, dull. Face above antennal fossae with longitudinal rugulae, a few fine rugulae extend between lateral ocellus and facial fovea to area above fovea; interrugal spaces punctate, tessellate, dull. Facial fovea shallow, broad, extending down to almost level of lower margin of antennal fossae, upper end separated from lateral ocellus by about three-fourths an ocellar diameter. Lateral ocellus separated from occipital margin by about one ocellar diameter.
Thoracic sculpturing as in simplex but shagreening and tessellation everywhere slightly finer and punctation slightly less evident. Middle basitarsus expanded medially, broadest near middle, sides evenly curved, broader than hind basitarsus. Tibial spurs and claws normal. Front wing usually with three submarginal cells (in less than 5% of specimens one or both wings with only two submarginal cells), vein 1st m-cu meets second submarginal cell near middle of cell; pterostigma about as broad as from inner margin of prestigma to wing margin.
Metasomal terga sculptured as in simplex. Pygidial plate with apex rounded, broad, almost U-shaped, but sides diverge anteriorly. Sterna as in simplex but punctures smaller and more crowded. vestiture: Generally ochraceous except as follows: lower areas of head, lower pleural areas and pale apical tergal bands almost white; terga 5 and 6 with long dark brown hairs; tarsi and fore and middle tibiae with brown hairs, Tergum 1 with lateral remnants of an apical pale pubescent band but not occupying more than one-fourth width of tergum; tergum 2 with apical pale band usually narrowly interrupted medially; terga 3 and 4 with complete apical pale bands. Sterna 2-5 with subapical bands of sparse, suberect hair of medium length. Propodeal corbicula complete anteriorly, with few internal hairs except anteriorly. Trochanteral flocculus complete, long, thick. Tibial scopal hairs highly plumose throughout, of normal length.
MALE. MEASUREMENTS AND RATIOS. — N = 20; length, 9-11 mm; width, 3-4 mm; wing length, M = 3.57 ± 0.190 mm; FL/FW, M = 0.96 ± 0.004; FS1/FS2, M = 2.62 ± 0.030.
INTEGUMENTAL COLOR. — As in female except as follows: clypeus yellow except brown anterior margin and dark spots mesad and below tentorial pits; parocular areas yellow up to level of tentorial pits or less; flagellar segments 2-11 dark red below; tergal apical hyaline areas often slightly broader.
STRUCTURE. — Antennae short, not extending back beyond tegulae in repose; scape subequal to flagellar segments 1-3 or slightly longer; flagellar segment 1 equal to 2 plus 3 in length or slightly longer and shorter than 4. Eye about three times as long as broad, inner margins converging towards mandibles. Malar space, mandibles, and galeae as in female. Maxillary palpus as in female but ratio of about 1.0:1.1:0.7:0.7:0.7:0.9. Labial palpus as in female but ratio of about 1.9:1.0:0.8:0.9. Labral process as in female. Clypeus as in female but medially less flattened, punctures sparser, somewhat shinier, Supraclypeal area and face sculptured as in female but rugulae of face somewhat coarser and ending laterally at about level of middle of lateral ocelli. Genal areas and vertex as in female.
Sculpturing of thorax as in female but mesoscutum and scutellum somewhat shinier medially and dorsal area of propodeum often with fine irregular rugulae dulling surface. Wings, claws and tibial spurs as in female. Terga 1-5 as in female terga 1-4 but often slightly shinier. Tergum 7 with distinct median, glabrous, shiny area. Sterna 2-5 as in female. Sternum 6 with apical margin strongly reflexed.
Genitalia and sterna 7 and 8 (Figs. 144-148) much as in placata. Note the following structures: gonoforceps with inner-dorsal ridge strong, angulate, but not forming a blunt process as in simplex; penis valve tips elongate, pointed, enlarged; sternum 7 with apicodorsal lobes long; sternum 8 with neck region long, tip only slightly expanded and shallowly emarginate.
VESTITURE. — In general ochraceous to white, generally paler than female, vertex of head and dorsum of thorax usually ochraceous to pale ochraceous. Terga 1-3 usually with apical white pubescent bands interrupted medially, usually broadly so on tergum 1; tergum 4 with apical band complete; terga 5 and 6 without apical pale hair bands. Sterna 2-5 without distinct subapical bands, hairs sparse, mostly appressed. Legs and apical abdominal terga without brown hairs as in female; inner surfaces tarsi pale yellow.
TYPE MATERIAL. — The lectotype (INHS) female, here designated, of Andrena asteris Robertson (Robertson No. 9877) and lectoallotype (INHS) male, here designated (Robertson No. 9876), were collected by Charles A. Robertson at Carlinville, Illinois, October 8th and 11th, on flowers of Aster sp.
DISTRIBUTION. — A. asteris is known to occur from North Dakota, Nebraska, and Missouri in the west to Quebec, Maine, and Georgia in the east (Fig. 6). This species has been taken from July 23rd through November 8th, but chiefly during September and early October. A total of 185 females and 82 males have been examined in addition to the types. The localities of these are listed below together with records from the literature.
CONNECTICUT: Hartford; Westbrook; West Haven. DISTRICT OF COLUMBIA: Washington. GEORGIA: Athens; Atlanta. ILLINOIS: Carlinville; Chicago; Evanston; Lilth; Crass Lake, Williamson Co.; Olive Branch; Volo; Wilmette. IOWA: Mt. Pleasant (6 miles S.W.). MAINE: Mt. Desert Island; Saco. MARYLAND: Bethesda; Cabin John; Glen Echo; Great Falls; Lakeland; Plummers Island. MASSACHUSETTS: Forest Hills; Hopkinton; Needham; Sherborn. MICHIGAN: Gladwin Co.; Grand Rapids; Midland Co.; Montmouncy Co.; Upper Manistee River, Crawford Co. MINNESOTA: Big Stone Co.; Lanesboro; St. Anthony Park; St. Paul; Washington Co. MISSOURI: Nevada; Ozark Lake. NEBRASKA: West Point. NEW HAMPSHIRE: Durham. NEW JERSEY: Englewood; Haddenfield; Moorestown. NEW YORK.: Lancaster; East Marion, Long Island; Flatbush; Larchmont; Mosholu; New Rochelle; Nyack; Oswego; Pine Island; Suffern; Tappan; Tompkins Co.; Washington Heights; White Plains. NORTH CAROLINA: Black Mts.; Bryson City; Church Island; Linville; Raleigh; Umstead Stale Park. NORTH DAKOTA: Mandan; Medora; Sheldon (7 miles S.E.); Slope Co. PENNSYLVANIA: Bloomsburg; Bryn Mawr (5 miles S.); Delaware Co.; New Galilee; Philadelphia. TENNESSEE: Knox Co. (University Farm). VIRGINIA: Rosemont; Vienna (3 miles W.). WEST VIRGINIA: Charleston; Smithville. WISCONSIN: Cranmoor; Milwaukee. MANITOBA: Aweme. NEW BRUNSWICK: St. Johns. ONTARIO: Dunnville; Grimsby; Porkhill; Spencerville; Toronto. QUEBEC: Lanordia.
FLORAL RECORDS. — Andrena asteris is an oligolege of the Compositae with a strong preference shown for plants of the genus Aster, Of the 60 specimens (28 collections) with floral data available to the author for study, 52 (40 females and 12 males) were taken on flowers of Aster and 8 (5 females and 3 males) were from flowers of Solidago. A few other plants have been recorded as being hosts of this species, but the bees were not collecting pollen from these flowers. Listed below are all known host-plant records for A. asteris, including the few published reports.
Aster sp., A. ericoides, A. paniculatus, Echinacea sp., Eupatorium altissimum, Polygonum pennsylvanicum, Solidago sp., S. nemoralis, S, puberula, S. rigida, S. ulmifolia.
Reprinted with permission from: Mitchell, T.B. 1960. Bees of the Eastern United States. North Carolina Agricultural Experiment Station Technical Bulletin No. 141.
FEMALE — Length 12 mm.; clypeus only slightly convex, projecting about one-third below suborbital line, dull and tessellate, punctures extremely minute and obscure, rather sparse medially, becoming quite close at extreme sides; facial foveae rather broad above, occupying about two-thirds of space between eyes and ocelli, covered with yellowish-white tomentum; space between margin of vertex and lateral ocelli slightly greater than their diameter; cheeks broader than eyes, rounded posteriorly, rather dull, punctures very minute, well separated; malar space extremely short; basal segment of flagellum slightly longer than 2nd and 3rd combined; process of labrum much broader than long, subtriangular, apex truncate and slightly emarginate; pubescence of head, thorax and basal leg segments pale ochraceous, that on the more apical leg segments becoming fuscous; thoracic integument dull, tessellate, punctures of scutum very fine, shallow, quite close anteriorly, becoming very sparse posteriorly, surface faintly shining, those on scutellum very obscure and sparse, surface more shining; pleura without evident punctures; dorsal area of propodeum nearly vertical, triangle densely tessellate; propodeal corbicula well developed, with a quite dense anterior fringe, pale ochraceous; trochanteral floccus long and dense, pale ochraceous; hind tibiae rather narrow and elongate, apex hardly twice width of basitarsi, scopa dense, hairs densely and conspicuously plumose, whitish-ochraceous, but becoming somewhat fuscous along posterior margin; front and middle basitarsi nearly or quite equaling their tibiae in width; 2nd submarginal cell considerably shorter than 3rd, receiving 1st recurrent one-third of its length from apex; abdominal terga smooth, dull, very finely tessellate, punctures extremely minute and obscure, hardly visible, well separated but hardly sparse, apical impressed areas very shallow, equaling about one-third length of discs medially, becoming narrowly brownish-hyaline along rims, discal pubescence extremely short, sparse and obscure, dark in color, terga 2-4 with thin, whitish apical fasciae, more or less interrupted medially on tergum 2, tergum 6 with a dense fuscous apical fimbria.
MALE — Length 9 mm.; with small yellow maculae between clypeus and lower margin of eyes; clypeus slightly convex, projecting about one-third below suborbital line, yellow except for a pair of small dark spots and the black apical rim, smooth and shining, very finely punctate, punctures well separated medially, becoming quite close and more minute at extreme sides; space between margin of vertex and lateral ocelli slightly greater than their diameter; cheeks very slightly broader than eyes, rounded posteriorly, rather dull, punctures very fine and rather close; malar space lacking; basal segment of flagellum slightly longer than 2nd and 3rd combined: Process of labrum rather broadly subtriangular, apex truncate and emarginate; mandibles quite short, with a distinct, inner, subapical tooth, overlapping but very slightly; pubescence of head, thorax and legs entirely whitish-ochraceous; thoracic integument dull, finely tessellate, punctures of scutum shallow and obscure, well separated but not sparse anteriorly, becoming very sparse and more obscure posteriorly, those on scutellum hardly visible, surface quite dull; pleura without visible punctures; dorsal area of propodeum very narrowly oblique, triangle densely tessellate; basitarsi slender and elongate, considerably narrower than their respective tibiae; 2nd submarginal cell considerably shorter than 3rd, receiving 1st recurrent slightly beyond middle; abdominal terga smooth but quite dull, finely tessellate, punctures exceedingly minute, well separated but not sparse, apical impressed area shallow, occupying medially about one-third length of disc, becoming brownish-hyaline along rims, discal pubescence very short, thin and obscure, entirely pale, terga 1-4 with thin, white, apical fasciae evident laterally, more or less widely interrupted medially; apical portion of sternum 8 rather robust, elongate, parallel-sided, abruptly truncate at tip, clothed with short dense pubescence beneath; penis valves slightly constricted medially, slightly expanded toward tip which is deeply, triangularly incised medially, more bulbous toward base, but not widely dilated, gonocoxites expansive apically, being broadly, triangularly dilated, gonocoxal lobes produced, acutely triangular.
DISTRIBUTION — Minnesota to the New England states, south to Georgia and Mississippi; August to October. One collection record from Indiana in May seems doubtful.
FLOWER RECORDS — Aster spp. Robertson (1929) records this on several species of Aster, and on Eupatorium, Polygonum and Solidago.
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References |
Andrena asteris Robertson, 1891, Transactions of the American Entomological Society, vol. 18, p. 56; Cockerell, 1900, Annals of the Magazine of Natural History, ser. 7, vol. 5, p. 404; Bruner, 1903, Transactions of the American Entomological Society, vol. 29, p. 243; Graenicher, 1905, Transactions of the Academy of Sciences Wisconsin, vol. 15, p. 92; Smith, 1910,. Annual Report of the New Jersey State Museum, 1909, p. 690; Viereck, 1916, Connecticut State Geological and Natural History Survey, Bulletin of the 22, p. 719; Pierce, 1918, Proceedings of the United States National Museum, vol. 54, p. 441; Britton, 1920, Connecticut State Geological and Natural History Survey, Bulletin of the 20, p. 344; Salt, 1927, Journal of Experimental Zoology, vol. 48, p. 251; Leonard, 1928, Cornell University Agricultural Experiment Station Memoirs 101, p. 1022; Brimley, 1938, Insects of North Carolina, p. 452; Proctor, 1946, Mt. Desert Region Survey, p. 503; Stevens, 1949, North Dakota Agricultural Experiment Station, Bimonthly Bulletin 12, p. 22.
Pterandrena asteris: Robertson, 1902, Transactions of the American Entomological Society, vol. 28, p. 194; 1910, Canadian Entomologist, vol. 42, pp. 324-328; 1914, Entomological News, vol. 25, p. 69; 1925, Ecology, vol. 6, p. 426; 1926, Ecology, vol. 7, p. 379; 1929, Flowers and Insects, p. 9.
Andrena (Pterandrena) asteris: Lanham, 1949, University of California Publications in Entomology, vol. 8, p. 200; Mitchell, 1960, North Carolina Agricultural Experiment Station Technical Bulletin 141, pp. 139-140; Knerer and Atwood, 1964, Proceedings of the Entomological Society Ontario, vol. 94, p. 46.
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Updated: 2024-04-26 13:19:40 gmt
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