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 is extremely closely related to A. daeckei and has the same modified mouthparts as described above for daeckei. A. kalmiae can be separated from daeckei on the basis of the taller vertex, the more closely punctate mesoscutum, the longer apical areas of female terga 2-4, and the larger average size.
FEMALE. MEASUREMENTS AND RATIOS. — N = 10; length. 9-10 mm; width. 3.0-3.5 mm; wing length, M = 3.08 ± 0.131 mm; FL/FW, M = 1.04 ± 0.001; FOVL/FOVW, M = 3.43 ± 0.036.
INTEGUMENTAL COLOR. — Generally as in daeckei but tegulae often testaceous and wing veins often reddish-brown.
STRUCTURE. — Head structure and sculpturing as in daeckei except as follows: eyes each about three and three-fourths times as long as broad, inner margins parallel; maxillary palpal segment ratio about 1.0: 1.0: 0.7: 0.5:
0.3: 0.3; labial palpal ratio about 1.0: 0.5: 0.3: 0.2: vertex above lateral ocellus equals slightly more than one ocellar diameter.
Thoracic structure and sculpturing as in daeckei except as follows: mesoscutum with anterior fourth (and periphery) with punctures more crowded. separated largely by half to one puncture width or slightly more.
Metasomal tergal structure and sculpturing as in daeckei except as follows: terga 2-4 each with apical area equal to about one-third length of tergum medially; terga 1-4 with punctures somewhat more crowded and surfaces shinier, shagreening absent or delicate.
VESTITURE. — Generally as in daeckei but terga 3 and 4 with apical pale fasciae more distinct.
MALE. MEASUREMENTS AND RATIOS. — N = 6; length, about 8 mm; width. about 2.5 mm; wing length, M = 2.88 ± 0.111 mm; FL/FW, M = 1.11 ± 0.011; FS1/FS2, M = 0.97 ± 0.019.
INTEGUMENTAL COLOR. — As in female but flagellar segments 2-11 reddish-brown below, tegulae testaceous, and terga 2-5 more broadly hyaline apically.
STRUCTURE. — Head structure and sculpturing as in daeckei except as follows: eyes each about three and one-half times as long as broad, inner margins converging slightly towards mandibles: maxillary palpal segments in ratio of about 1.0: 1.0: 0.6: 0.6: 0.3: 0.4; labial palpal ratio about 1.0: 0.6: 0.3: 0.5: vertex above lateral ocellus equals slightly more than one ocellar diameter.
Thoracic structure and sculpturing as in daeckei but mesoscutum anterior fourth with punctures more crowded, as in female.
Metasomal structure and sculpturing as in daeckei except terga generally shinier, less shagreened if at all. Terminalia as in daeckei.
VESTITURE. — Generally white to cinereous: tergal fasciae absent or extremely weak: maxillary and labial palpi and galeae with abundant short erect hairs as in daeckei.
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 11 mm.; face very slightly longer than broad; clypeus only slightly convex, projecting about one-third below suborbital line, very closely, deeply and rather finely punctate, interspaces somewhat shining, but punctures almost crowded; facial foveae broad above, occupying most of area between eyes and ocelli, slightly and gradually narrowed below, covered with whitish tomentum; space between margin of vertex and lateral ocelli subequal to their diameter; cheeks subequal to eyes in width, rounded posteriorly, shining, minutely and quite closely punctate, punctures becoming somewhat more coarse but still close on vertex laterally; malar space extremely short; basal segment of flagellum subequal to 2nd and 3rd combined; process of labrum subtriangular, considerably broader basally than long, apex rather narrowly truncate; pubescence of head, thorax and legs whitish-ochraceous, somewhat more yellowish on dorsum of thorax and on apical portion of legs; punctures of scutum fine, but deep and distinct, rather close anteriorly, becoming somewhat more coarse and sparse posteriorly near middle, where surface is somewhat shining, those on scutellum coarser and deeper, well separated but hardly sparse, surface shining; pleura rather coarsely rugose above, becoming more rugoso-punctate posteriorly; dorsal area of propodeum oblique, triangle rather coarsely rugoso-striate; propodeal corbicula very short and poorly developed, whitish, without an anterior fringe; trochanteral floccus short but rather dense, whitish; hind tibiae slightly broadened apically, apex not much broader than basitarsi, scopa dense, hairs rather short, simple, pale ochraceous, becoming fuscous toward base; fore and mid basitarsi slightly narrower than their respective tibiae; 2nd submarginal cell considerably shorter than 3rd, receiving 1st recurrent about one-third from apex; abdominal terga somewhat shining, deeply but finely punctate, punctures well separated medially, becoming close laterally, but very close on apical impressed areas, which are rather shallow, narrow, occupying somewhat less than one-third length of discs medially, becoming very narrowly hyaline along rims, discal pubescence very short, thin, erect, entirely pale, terga 2-4 with very narrow, whitish, apical fasciae, tergum 5 with a brownish-ochraceous, apical fimbria.
MALE. — Length 7 mm.; face very slightly longer than broad; clypeus rather strongly convex, projecting about one-third below suborbital line, somewhat shining, punctures deep, distinct, rather fine and close, becoming crowded at extreme sides; space between margin of vertex and lateral ocelli slightly greater than their diameter; cheeks slightly broader than eyes, rounded posteriorly, dull, punctures exceedingly minute and obscure; malar space extremely short; basal segment of flagellum subequal to 2nd segment, both of these short, not much longer than broad, shorter than 3rd and fallowing segments; process of labrum short and rather broad, somewhat narrowed to the truncate apical margin; mandibles rather short, with a distinct inner subapical tooth, overlapping about one-third; pubescence of entire head, thorax and legs whitish; dorsum of thorax somewhat shining, punctures of scutum fine but rather deep and distinct, well separated anteriorly, becoming quite sparse near middle posteriorly, those on scutellum somewhat more coarse and irregular, well separated in general; pleura rather coarsely rugose; dorsal area of propodeum oblique, triangle rather coarsely rugoso-striate; all basitarsi slender and elongate, considerably narrower than their respective tibiae; 2nd submarginal cell much shorter than 3rd, receiving 1st recurrent about one-fourth from apex; abdominal terga smooth and shining, punctures very fine, well separated but not sparse, evenly distributed, apical impressed areas rather shallow and narrow, obscurely reddened, becoming yellowish-hyaline along rims, discal pubescence very short, thin, erect, entirely pale, fasciae not developed; apical portion of sternum 8 short, robust, apex subtruncate, with a very slight, median emargination, clothed beneath with short, pale pubescence; penis valves rather slender apically, somewhat broadened toward base, sides quite deeply excavated, gonocoxites gradually and rather broadly dilated apically to form hatchet-shaped lobes which are slightly concave on dorsal surface, gonocoxal lobes quite strongly produced, rather robust, but acute apically, nearly but not quite attaining apical lobes.
DISTRIBUTION. — Nova Scotia, south to North Carolina; April to July.
FLOWER RECORDS. — Kalmia and Vaccinium. Also recorded on Ledum by Brittain and Newton (1934).