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Andrena anograe, female, back1 2012-08-06-15.31.25 |
© Copyright source/photographer
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Andrena anograe, female, face 2012-08-06-15.41.48 |
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Smithsonian Institution, Entomology Department · 1
Andrena anograe, face |
Smithsonian Institution, Entomology Department · 1
Andrena anograe, side |
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Smithsonian Institution, Entomology Department · 1
Andrena anograe, top |
Adalbert Goertz · 1
Andrena anograe |
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Overview |
Text used courtesy of the Illinois Natural History Survey from:
LaBerge, W. E., Thorp, R. W., 2005. A revision of the bees of the genus Andrena of the Western Hemisphere. Part XIV. Subgenus Onagrandrena. Illinois Natural History Survey Bulletin 37: 1-63.
Please report text errors to: leah at discoverlife dot org.
Andrena anograe is one of only two species with females having largely black vestiture except pale on the thoracic dorsum and can be readily recognized by this character. The males of anograe are similar to those of A. oenotherae but have the propodeum outside of the dorsal enclosure and the lower lateral mesepisternal areas more finely sculptured.
FEMALE: MEASUREMENTS AND RATIOS. — N = 20; length, 12-15 mm; width, 3-4 mm; WL, M = 4.38 ± 0.284 mm; FL/FW, M = 1.06 ± 0.007; FOVL/FOVW, M = 2.88 ± 0.053.
DIAGNOSIS. Vestiture black except thoracic dorsum with hairs ochraceous to fox-red with few black hairs intermixed; vertex usually with some pale hairs, wing membranes hyaline, veins dark reddish brown to black; metasomal terga black without violaceous reflections. Galeae moderately long, dulled by fine dense shagreening; labral process slightly longer than half length of labrum, apex broad, thickened, usually bidentate, lateral margins concave. Clypeus with small, round, dense punctures, surface shiny, usually without median impunctate line; vertex above lateral ocellus equals one ocellar diameter or slightly less. Pronotum without humeral angle or vertical ridge laterally. Mesoscutum punctate, interpunctural surfaces dulled by fine shagreening. Scutellum with anterior punctate area moderately shiny. Propodeum with dorsal surface; enclosure (Fig. 7) coarsely rugulate, rugulae mostly transverse apically, irregular basally; dorsal surface outside of enclosure moderately punctatorugose; surfaces finely tessellate or shagreened. Mesepisternum with lower surface punctate, interpunctural spaces tessellate. Metasomal terga 2-4 with apical areas punctate in basal three-fifths or more, punctures separated mostly by 1 to 2 puncture widths, basal area punctures separated largely by 1 to 3 puncture widths, surfaces shiny. Thoracic dorsum with hairs moderately long, longer than width of antennal scape; propodeum without corbicula laterally, hairs all long and plumose; scopal hairs long, simple, moderately abundant.
MALE: MEASUREMENTS AND RATIOS. — N = 20; length, 10-12 mm; width, 2.5-3.0 mm; WL, M = 3.85 ± 0.270 mm; FL/FW, M = 1.10 ± 0.008; FS1/FS2, M = 1.41 ± 0.034.
DIAGNOSIS. Vestiture color as in female but mesepipleura occasionally with pale hairs intermixed with black and metasomal tergum 1 often with at least a few pale hairs basally; wing membranes hyaline, yellowish, veins red to reddish brown, metasomal terga black. Galeae as in female; labral process broad, strongly bidentate, reflexed; clypeus as in female; vertex above lateral ocellus equals about one ocellar diameter; flagellar segment 1 with minimum length equal to segment 3 and slightly longer than or equal to segment 2. Pronotum as in female, mesoscutum and scutellum posteriorly dulled, sculptured as in female but punctures slightly finer; mesepisternum (especially lower half) and propodeum outside of dorsal enclosure finely sculptured, with distinct punctures, not punctatorugose; dorsal enclosure reticulorugose (Fig. 12). Metasomal terga 2-5 with apical areas shiny, with small sparse punctures in basal half to two-thirds; basal areas slightly more coarsely punctate, shiny. Metasomal tergum 2 with basal area hairs long, at least half as long as those of tergum 1; hind tibiae with outer surface hairs long, sparse, almost as long along anterior margin as dorsal femoral hairs. Sternum 7 distinctly bidentate apically; sternum 8 not distinctly lobed apically but distinctly emarginate apically (Figs. 27 and 28).
TYPE MATERIAL. The holotype female of Andrena anograe Cockerell was taken at Colorado Springs, Colorado, middle of July, at flowers of white Oenothera (Ckll. No. 3,567) (USNM No. 5,808). The holotype female of Andrena micranthophila Cockerell was collected by W. P. Cockerell from east of Lake George, Park Co., Colorado, June 18, at flowers of Chamaerhodos erecta and is in the collection of the California Academy of Sciences (CAS No. 15,355). The holotype female of Andrena knowltoni was taken 5 miles S. of Green River, Emery Co., Utah, May 24, 1960, on Stanleya pinnata by G. F. Knowlton and is in the collection of the California Academy of Sciences (CAS No. 6,698).
DISTRIBUTION. Andrena anograe is known to occur from central Wyoming, south to Colorado, and west to central Utah (Fig. 2). A single male labeled Tucson, Arizona, April 8, 1935, A. L. Melander in the INHS collection is here regarded as a mislabeled specimen. It may be one of the many specimens purchased by T. F. Frison and reputedly collected in Arizona by Oslar (Thorp, 1970). This species has been taken from May 5 through July 31, but chiefly in June and early July. A total of 96 females and 92 males were examined from the localities listed below (records from the literature are included).
COLORADO. CHAFEE CO.: Mt. Princeton Hot Springs (1 mi. E.); Salida (1.5 mi. W). COSTILLO CO.: Sage Flats, Ute Creek. DENVER CO.: Denver. EL PASO CO.: Colorado Springs. GUNNISON CO.: Gunnison (7.6 and 8.4 mi. W). LARIMER CO.: Mishawauka. MONTROSE CO.: Cimarron (1.2 mi. W). PARK CO.: Lake George (E of); Wilkerson Pass. TELLER CO.: Florissant. NEW MEXICO. SAN JUAN CO.: Waterflow (2.5 mi. N). UTAH. EMERY CO.: Green River (2.5 mi. W, 6, 7 and 10 mi. N and 5 mi. S); Red Plateau(E foot); Woodside, (4.5 mi. N). GARFIELD CO.: Boulder. GRAND CO.: Crescent Junction; Johnson; Thompson. SAN JUAN CO.: Monticello. WYOMING. ALBANY CO.: Laramie (S. of). LARAMIE CO.: Cheyenne. SWEETWATER CO.
FLORAL RECORDS. Andrena anograe, as its name suggests, collects pollen exclusively from species of Onagraceae, including the genus Oenothera subgenera Anogra and Pachylophis. It has been collected from flowers of the following plants.
Chamaerhodos erecta, Cryptantha sp., Gaura sp., G. coccinea. Geranium fremontii, Oenothera sp., O. albicaulis, O. caespitosa, O. c. var. montana, O. coronopifolia, O. pallida trichocalyx, O. s. scapoidea, Oxytropis deflexa, Penstemon sp., Senecio sp., Stanleya pinnata.
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References |
Andrena anograe Cockerell, 1901, Canadian Ent., 33: 154; 1934, American Mus. Nov., No. 697, p. 2.
Andrena (Melandrena) anograe: Lanham, 1949, Univ. California Publ. Ent., 8: 221; Linsley and MacSwain, 1955, Pan-Pacific Ent., 31: 164, 165, 166; Linsley, MacSwain, and Smith, 1955, Pan-Pacific Ent., 31: 175.
Andrena (Onagrandrena) anograe knowltoni Linsley and MacSwain, 1961, Pan-Pacific Ent., 37: 126-127; Linsley, MacSwain, and Raven, 1963, Univ. California Publ. Ent., New synonymy.
Andrena (Onagrandrena) anograe: Linsley and MacSwain, 1956 Pan-Pacific Ent., 32: 112; Tepedino, 1982, The Southwest Ent., 7: 17.
Andrena micranthophila Cockerell, 1906, Bul. American Mus. Nat. Hist., 22: 432; Prison, 1927, Bul. Illinois St. Nat. Hist. Surv., 16: 231 (type list).
Andrena (Melandrena) micranthophila: Lanham, 1949, Univ. California Publ. Ent., 8: 221; Linsley and MacSwain, 1955, Pan-Pacific Ent., 31: 166 synonymy).
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Updated: 2024-04-25 21:24:58 gmt
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