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Andrena monogonoparia Viereck, 1917
Life   Insecta   Hymenoptera   Apoidea   Andrenidae   Andrena
Subgenus: Andrena


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Overview
Reprinted with permission of the American Entomological Society from: LaBerge, W. E. 1980. A revision of the bees of the genus Andrena of the Western Hemisphere. Part X. Subgenus Andrena. Transactions of the American Entomological Society 106: 395-526.

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This relatively rare manzanita bee from California is closely related to A. prolixa LaBerge; The female of monogonoparia is like that of prolixa in lacking the basal inferior mandibular tooth, in having elongate mouthparts and an entire labral process; The female of monogonoparia differs from that of prolixa by the paler vestiture, shorter malar space, less punctate clypeus, and the dull, tessellate, impunctate, faintly metallic blue, metasomal terga; The male of monogonoparia is like that of prolixa in the elongate mouthparts and usually simple labral process but differs in the impunctate, tessellate, often metallic blue, metasomal terga and the lack of inferior basal mandibular teeth.

FEMALE. MEASUREMENTS AND RATIOS. � N = 20; length, 10-12 mm; width, 2-3 mm; wing length, M = 4.27 � 0.116 mm; FL/FW, M = 0.96 � 0.006; FOVL/ FOVW, M = 2.49 � 0.041.

INTEGUMENTAL COLOR. � Black except as follows: mandible with apical third to half dark rufescent; flagellar segments 3 to 10 below dark reddish-brown; tegulae translucent, reddish-brown; wing membranes slightly infumate, yellowish, veins reddish-brown; terga 1 and 2 and often base of 3 with basal areas usually metallic-blue; tergal apical areas dark rufescent; sterna 2-5 with apical areas hyaline; tarsi dark rufescent; tibial spurs testaceous.

STRUCTURE. � Antennal scape length equals first three and one-half flagellar segments; flagellar segments as in prolixa; Eyes each four times as long as broad or slightly shorter, inner margins parallel or converging slightly towards ocelli; Mandible as in prolixa, without basal tooth; Malar space not elongate, minimum length about one-fourth basal width of mandible; Galea and glossa elongate as in prolixa; Maxillary palpus as in frigida but segmental ratio about as 1.0:0.7:0.7:0.6:0.5:0.5; Labial palpus as in frigida but ratio about as 1.0:0.6:0.5:0.5; Labral process entire, triangular with rounded apex, flat, surface dulled by shagreening and fine transverse wrinkles; labrum apical to process flat, dull, without cristae; Clypeus as in prolixa but punctures small, sparse, separated by two to five puncture widths; surface moderately dulled by weak shagreening; Supraclypeal area and face above antennal fossae as in prolixa but facial rugulae weaker; Facial fovea, vertex and genal area as in prolixa; Thoracic form and sculpturing as in prolixa except as follows: mesoscutal punctures obscured by tessellation but visible, in anterior half separated by half to one puncture width; scutellum shiny; propodeum more coarsely tessellate.

Metasomal terga 1-4 with basal areas impunctate or virtually so, finely tessellate, apical areas reticularly shagreened with obscure punctures; Pygidial plate with apex blunt, broadly rounded, internal raised triangle weak; Sterna as in prolixa.

VESTITURE. � Head white except as follows: fovea dark brown; upper part of face, along inner margins eyes, on vertex mixed with pale, on upper genal area dark brown; Thoracic hair pale, white to pale ochraceous except mesoscutum and scutellum with long dark hairs mixed with the pale; Leg hairs white except as follows: fore and middle tibiae, tarsi and posterior half to three-fourths of hind tibia with dark brown.

Metasomal terga 1-3 and often 4 with white hairs; terga 5 and 6 and apex of 4 with brown hairs; sternal hairs chiefly white; Tibial scopal hairs simple, long; propodeal corbiculum complete, with few or no internal hairs; trochanteral flocculus complete.

MALE. MEASUREMENTS AND RATIOS. � N = 20; length, 9-11 mm; width, 1.5-2.0 mm; wing length, M = 3.64 � 0.134 mm; FL/FW, M = 0.92 � 0.006; FS1/FS2, M = 1.01 � 0.021.

INTEGUMENTAL COLOR. � As in female but tergal basal areas occasionally lacking metallic-blue reflections.

STRUCTURE. � Antennal scape length equals first two and one-fourth flagellar segments or more; flagellar segment 1 about as long as segment 2, shorter than segment 3, longer than broad; Mandible moderately long, when closed outer mandible extends beyond midlabrum by about one-fourth its own length or less; without basal inferior angle or tooth; Malar space, galea and glossa as in female; Maxillary palpus as in female; Labial palpus as in female but ratio about as 1.0:0.7:0.5:0.5; Labral process entire, triangular with rounded apex, moderately reflexed, shiny; labrum apical to process convex, shiny, without crista; Clypeus narrowed towards labrum, evenly punctate with punctures separated mostly by half a puncture width, slightly more near midline, without impunctate midline or subapical area; surface shiny to dulled by weak shagreening; Supraclypeal area, face above antennal fossae and vertex as in female; Genal area as in prolixa but dulled by fine dense reticular shagreening except in narrow zone adjacent to eye; Thoracic form and sculpturing as in female except pronotal ridge and angle more distinct.

Metasomal terga 1-5 sculptured as in female terga 1-4; Tergum 7 with narrow, dull pseudopygidial area; Sterna 2-5 sparsely punctate, dulled by coarse reticular shagreening; sternum 6 with apical margin flat.

Terminalia as in figures 137-141; note sternum 7 with truncate apex; penis valves with blunt tips and broad dorsolateral wings.

VESTITURE. � As in female except as follows: terga 1-5 with pale hairs; terga 6 and 7 with brown and pale hairs mixed; sternal hairs pale, without subapical fimbriae or these weak.

Identification
Andrena (Andrena) monogonoparis Viereck 1916 Proc. Ac. Sci. Phil. 68, p. 566

Andrena (Andrena) monogonoparis new species

Male Length 8.5 mm.; body black, mostly covered with whitish hair: head with its facial line : transfacial line :: 54: 70, axial line : temporal line :: 36:25, temples produced into a right angle, the angle opposite the middle of the eye, malar line : joint 3 of antenne: 2:8, elevated portion of malar space shorter than the depressed portion, head covered with whitish and black hairs through out, the white hairs present only on the clypeus, supraclypeal area and to some extent on the vertes, occiput and temples, front rather roughly reticulated and partly indistinctly striate, ocellocular line : ocelloccipital line :: 18:6, face shining, distinctly punctured, its punctures mostly from one to two puncture widths apart, the interstices finely reticulated, clypeus apparently slightly convex, elevated directly above the apical main, nearly polished and punctured much like the face, clypearea wanting sculpture of the clypeus not hidden by the moustache, labrarea with two faces, emarginate beneath at the apex of the lower face, width at base length down the middle 8:3. width at apex length down the middle ::25:3, labrarea at base apparently half as wide as the labrum, the latter with a fringe of golden hairs, joint 3 of antennae 4: 8:7, joint 4 and following joints nearly twice as long as thick the terminal joint excepted, which is apparently at least twice as long as thick, dullish, flagel undulate in outline, antenna blackish throughout, right mandible nearly typical, rather slender, extending nearly to the end of the basal fourth of its fellow, black except for the apical third which is mostly dark reddish, palpi lender, nearly typical; thorax covered with an abundance of whitish hairs, that are sparsely mixed with back on the dorsulum and scutel, hairs of dorsulum seemingly as long as hair of mesopleura, dorsulum dullish, finely reticulated and sparsely punctured, the punctures rather indistinct and mostly four or five puncture widths apart, notauli represented by a shining line, mesopleurae with whitish hairs throughout, finely reticulated and mostly covered with shallow pits that are mostly two or three puncture widths apart, scutel hairy and sculptured much like the dorsulum except that it is partly nearly polished, metanotum hairy and sculptured like the dorsulum except that the sculpture is denser, tegulae brownish stramineous, polished, wing base mostly pale stramineous, subcosta blackish, stigma brownish stramineous with a blackish tinge, rest of veins dull stramineous with a blackish tinge, first recurrent vein received by the second submarginal cell beyond the middle and little nearer to the second transverse cubitus than the first transverse cubitus is to the stigma on the radial vein, nervulus interstitial, forming an acute angle with the first abscissa of the discoidal vein, legs blackish brown excepting the tarsi and hind tibiae which are rather dark brown, legs covered with whitish hairs, hind metatarsi at most hardly wider than mid meta tarsi and nearly half as wide as hind tibia at apex of the latter: propodeum with its enclosure well defined, finely reticulate, rounded at apex, rest of upper face sculptured somewhat like the mesopleura but with smaller pits and covered with whitish hair, propodeal pleura sculptured apparently like the mesopleure the sculpture not hidden by the uniformly distributed whitish hairs; abdomen with its tergum shining, finely reticulated and indistinctly punctured, the punctures many puncture widths a part, first and second tergites with erect whitish hairs, third and following tergites with dark or blackish hairs excepting the fifth beyond its base which like the apex of the abdomen is covered with pale brownish hairs, second tergite with its elevated portion down the middle : depressed portion :: 23 : 5, fifth tergite with its basal blackish portion covered with poorly defined punctures that are many puncture widths apart, rest of fifth tergite and depressed portion of sixth tergite brownish stramineous, anal process spatulate and strmineous at apex, not emarginate, tergum with its hairs not supplemented on the sides of the second, third and fourth tergites by spiest hair bands


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Ericaceae  Arctostaphylos @ AMNH_BEE (4)
_  Withheld @ BBSL__YOSE (1); BBSL (8)

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Updated: 2022-05-22 11:22:33 gmt
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