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Andrena flaminea LaBerge, 1971
Life   Insecta   Hymenoptera   Apoidea   Andrenidae   Andrena
Subgenus: Scrapteropsis

Andrena flaminea, female, face
Smithsonian Institution, Entomology Department · 9
Andrena flaminea, female, face

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Andrena flaminea, female, side
Smithsonian Institution, Entomology Department · 9
Andrena flaminea, female, side
Andrena flaminea, female, top
Smithsonian Institution, Entomology Department · 9
Andrena flaminea, female, top

Andrena flaminea, face
Smithsonian Institution, Entomology Department · 1
Andrena flaminea, face
Andrena flaminea, side
Smithsonian Institution, Entomology Department · 1
Andrena flaminea, side

Andrena flaminea, top
Smithsonian Institution, Entomology Department · 1
Andrena flaminea, top
Overview
Reprinted with permission of the American Entomological Society from: LaBerge, W. E. 1971b. A revision of the bees of the genus Andrena of the Western Hemisphere. Part IV. Scrapteropsis, Xiphandrena, and Rhaphandrena. Transactions of the American Entomological Society 97: 441-520.

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This species was recognized as new by H. L. Viereck and given its name on a label, although the name and description were never published. The species is known from only two females, but these are so distinctive that I do not hesitate to name it at this time. It is similar to A. alleghaniensis in having the hairs of the thoracic dorsum short and scale-like but erect (also it is similar to A. rubi in this respect but these hairs are shorter in flaminea). The flaminea females differ from the alleghaniensis-group females in not having the hind femoral ridges. The flaminea females are distinctive among Scrapteropsis in their tall vertices, in the dark tibial scopal hairs and in having terga 1 and 2 or 1 to 3 bright orange-red in color.

FEMALE. MEASUREMENTS AND RATIOS. — N = 2; length. 10-11 mm; width, about 3 mm; wing length, 3.93-4.20 mm; FL/FW, 1.04-1.06; FOVL/FOVW, 3.21-3.28.

INTEGUMENTAL COLOR. — Black except as follows; mandible largely rufescent; flagellar segments 2-10 dark brown below; wing membranes deeply infumate, brown, veins dark reddish-brown terga 1-2 (holotype) or 1-3 (paratype) bright orange-red, terga 3 or 4-5 with apical areas translucent. brownish yellow; sterna 2 and 3 red; sterna 4 and 5 red apically; distitarsi dark rufescent; tibial spurs rufescent.

STRUCTURE. — Scape length equal to first three and one-half flagellar segments; flagellar segment 1 equal in length to segments 2 plus 3 which are equal to each other and shorter than 4, segments except first and last broader than long. Eyes each slightly more than three and one-half times as long as broad, inner margins parallel. Malar space and mandibles as in imitatrix. Galea as in imitatrix but more acuminate. Maxillary palpus as in imitatrix but segmental ratio about 1.0: 1.0: 0.8: 0.7: 0.5: 0.6. Labial palpus as in imitatrix but ratio about 1.0: 0.8: 0.6: 0.7. Labral process narrowed apically, bidentate, labrum apical to process punctate, shiny. without sulcus or crista. Clypeus as in imitatrix but punctures irregular in size and spacing and impunctate median line narrower. Supraclypeal area with minute crowded punctures, surface shiny. Genal area about as broad as eye in profile; laterally with small round punctures separated mostly by one puncture width except more crowded near eye margin, surface moderately dulled by fine shagreening. without rugulae; ventrally with fine crowded parallel rugulae turned sharply in towards hypostomal carina. Vertex tall, above lateral ocellus equals almost one and one-half ocellar diameters. with crowded punctures above ocelli, sparse punctures laterally, surface moderately dulled by fine reticular shagreening. Face above antennal fossae with fine longitudinal rugulae diverging towards ocelli and interrugal punctures. Facial fovea as in imitatrix.

Pronotum normal, as in imitatrix. Mesoscutum and scutellum with crowded punctures separated mostly by half a puncture width, surface dulled by fine tessellation. Metanotum similar but more densely punctate and more coarsely tessellate. Propodeum with dorsal enclosure with a single median longitudinal rugula and irregular rugulae laterally; dorsolateral, posterior and lateral surfaces as in imitatrix. Mesepisternum as in imitatrix. Hind femur without ventral ridges; hind tibia broad but broadest at apex. Wing venation as in imitatrix but vein 1st m-cu meets second submarginal cell at or before middle of cell.

Metasomal tergum 1 with basal area punctures large, deep. separated by half to one puncture width (less laterally); apical area punctures small. crowded; surfaces shiny, unshagreened. Terga 2-4 sculptured us in tergum 1. Pygidial plate as in imitatrix. Sterna 2-5 with narrow impunctate apical areas; basal areas with crowded coarse punctures; surfaces dulled by fine dense reticular shagreening.

VESTITURE. — Generally white except as follows; thoracic dorsum pale ochraceous; terga 5 and 6 except at extreme sides dark brown; leg hairs dark brown except femora white. Thoracic dorsum and posterior pronotal lobes with short, thick, erect, scale-like hairs. Propodeal corbicula without fringe of plumose hairs anteriorly, interior hairs simple; trochanteral flocculus weak; tibial scopal hairs simple. Terga without apical pubescent fasciae; sterna without subapical fimbriae.

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Updated: 2024-03-29 01:59:13 gmt
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