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Andrena tetonorum Viereck & Cockerell, 1914
Life   Insecta   Hymenoptera   Apoidea   Andrenidae   Andrena

Overview
Reprinted from: Viereck, H.L. and T.D.A. Cockerell. 1914. New North American bees of the genus Andrena. Proceedings of the U.S. National Museum 48: 1-58. The copyright on this work has expired.

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Sioux County, Nebraska. May. (L. Bruner.)

MALE. — Length, 9 mm. Black, small joints of the tarsi reddish, clypeus except lower edge and two black spots and narrow lanceolate lateral marks close to sides of clypeus but only touching at lower end, creamy white. Head broad; process of labrum emarginate; clypeus shining, with strong but not dense punctures; front and vertex dull; cheeks normal; flagellum obscurely brownish beneath except at base. Third antennal joint about twice as long as fourth; fifth only about as long as fourth. Head and thorax with abundant long creamy white hair. Mesothorax dull, with small punctures ; scutellum shining anteriorly; area of metathorax granular, defined by absence of hah-. Tegulae dark red-brown. Wings reddish hyaline, stigma and nervures amber color, the nervures on basal part of the wing becoming fuscous ; stigma rather small. Basal nervure meeting transverse median. First recurrent nervure joining second submarginal cell before middle. Third submarginal rather short. Spurs cream color. Abdomen shining, without evident punctures; hind margins of the segments with thin white hair bands, that on first very feeble. Hair on under side of apical half of abdomen yellowish. (The form next described is in my opinion conspecific with A. tetonorum, though it is smaller, and is separated in the key on the proportions of the antennal joints.) A. tetonorum falls in the key close to A. Cressona kansensis, horn which it is separated by the indistinctly punctured abdomen. ANDRENA TETONORUM, variety A.

Sioux County, Nebraska. (L. Bruner.)

MALE. — Length, 8.5 mm. The rather short antennae and dense orange hair at apex of abdomen make it look like a female. Black, the small joints of tarsi ferruginous. Clypeus, except two spots on lower edge and very small elongate lateral marks close to sides of clypeus, cream color. Pubescence light ocherous. Head ordinary, facial quadrangle broader than long. Process of labrum emarginate. Clypeus sparsely and feebly punctured, more strongly at sides. Flagellum very dark reddish beneath. Third antennal joint long, fully as long as the next two joints together, but the fifth is quite short. Mesothorax dull, feebly punctured; scutellum shining in front; area of metathorax dull and granular. Tegulae piceous with pallid margins. Wings reddish hyaline, nervures and stigma clear amber. Basal nervure just short of transverse median. Second submarginal cell receiving first recurrent nervure before middle. Third submarginal short. Spurs ferruginous. Abdomen shining, with only weak piliferous punctures. Hind margins of segments with creamy white hair bands. Second segment m middle depressed less than one-third. Abdominal segments beneath fringed with ferruginous hair. Apical plate truncate.

A. lappulae (LL NOTES: = Andrena scurra Viereck) is very close to this, but has the head broader and shorter, pubescence paler (not pale orange or fulvous on abdomen beneath, as it is in tetonorum) , lateral face-marks larger, stigma distinctly margined.

Names
Scientific source:

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Updated: 2024-03-28 20:27:34 gmt
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