Reprinted by permission of the Regents of the University of California from:
Thorp, R. W. 1969. Systematics and ecology of bees of the subgenus Diandrena (Hymenoptera: Andrenidae). University of California Publications in Entomology 52: 1-146.
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This species is most closely related to A. eothina and is distinguished from that species by its nearly all white facial pubescence, paler and more greenish integument, and the more feeble emarginate apex of the labral process.
Andrena anatolis is oligolectic on morning-opening, yellow-flowered species of Camissonia in xeric habitats of southern California and northwestern Baja California. It is principally associated with C. bistorta; however, the bee has been taken near San Quintin, Baja California, which is nearly 80 miles south of the limit of distribution of this plant. At this locality a female without pollen was taken on C. crassifolia a species which continues much farther south. If the bee Can thrive on this pollen it may also occur farther south.
FEMALE. — Integument olive-green; antenna uniformly dark brownish-black, clypeus with subapical, narrow, transverse black line extending dorsad medially with violaceous reflections, forewing with stigma dark brownish-black; pubescence pale, white except brownish in narrow border laterally on face, tips of hairs on antennal scape, few scattered long hairs on mesoscutum and on anal fimbria, outer surface of tibial scopae white anteriorly, brownish posteriorly; facial fovea with sheen gray, tomentum white. Head moderately shiny, closely, moderately coarsely punctate with tessellate interspaces; clypeus with punctures separated by less than one diameter; latero- and supraclypeal areas with punctures becoming contiguous dorsally; facial fovea extending from summit of eye to slightly below antennal base; eye slightly arcuate medially; antenna with segments 1 to 3 of flagellum as 10: 4: 4.5; labrum with process feebly emarginate, apices rounded (fig. 33); subgenal coronet short, well developed; gena dull, tessellate, moderately coarsely, indistinctly punctate with punctures separated by about one diameter, becoming more shiny, more coarsely, and more sparsely punctate posteroventrally; pubescence of clypeus moderately long, sparse, suberect. Mesosoma dull, tessellate-punctate; pronotum moderately finely punctate with transversely tessellate interspaces, dorsolateral angle nearly right-angled with small but definite lateral fold, posterior edge of pronotum arched; mesoscutum densely, moderately coarsely punctate, punctures separated by one diameter or less with tessellate interspaces, becoming duller with punctures nearly contiguous posteromedially with finer and denser tessellations, notaulus short, moderately distinct; scutellum moderately shiny, closely, moderately coarsely punctate, rugose-punctate laterally with punctures contiguous, punctures slightly separated (less than one diameter) medially; metanotum rugose-punctate with punctures contiguous, propodeum rugose-punctate, enclosure with borders not well defined, longitudinally rugulose basally, irregularly, finely rugulate below, finely, transversely striate apically; episternum 2 anteriorly coarsely, closely punctate with tessellate interspaces, punctures separated by about one diameter, posteriorly finely punctate, vertically tessellate; wing lightly infuscated, submarginals 1: 2 (27: 30), stigma : rest of marginal cell (12.5: 16), hind wing with jugal lobe narrow and without incision between it and vannal, reaching level of cu-v; posterior trochanter with long, curved, whitish, perfect, floccus; tibial scopa long, loose, simple except for narrow posterior band of finely branched hair, posterior hairs of scopa slightly more than twice as long as width of tibia at apex; pubescence of mesoscutum with numerous short pale and few long dark hairs intermixed. Metasoma moderately shiny, tessellate, finely, shallowly, indistinctly punctate; punctures of first tergum separated by 1 to 2 diameters or slightly more, punctures nearly invisible on terga 2 to 4; pubescence of tergum 1 moderately long, suberect, of terga 2 to 4 short, suberect, with somewhat indistinct apical hair bands on terga 2 and 3, more distinct and complete on apex of tergum 4. Length 6 to 7 mm, forewing 5 to 5.5 mm.
MALE. — Integument olive-drab; antenna uniformly dark brownish-black, clypeus with narrow subapical dark margin with violaceous reflections, forewing with stigma mahogany; pubescence; pale, white except golden on narrow lateral margin of face, tips of some hairs on antennal scape, above eye, and on anal fimbria. Head moderately shiny, tessellate, densely punctate; clypeus latero- and supraclypeal areas with punctures contiguous; parocular depression short, linear; eyes slightly convergent below; antenna with segments 1 to 3 of flagellum as 11: 5: 7; labrum with process short, broad, feebly emarginate apically, strongly recurved (fig. 34); mandibles moderately long, decussate; gena moderately shiny, tessellate, moderately coarsely punctate, punctures separated by 1 to 2 diameters, becoming more sparse posteroventrally; pubescence of clypeus long, moderately dense, subdepressed. Mesosoma dull, moderately coarsely, shallowly punctate with tessellate interspaces; pronotum finely, sparsely punctate with transversely tessellate interspaces, dorsolateral angle nearly right-angled with small but definite lateral fold, posterior margin of pronotum somewhat arched; mesoscutum moderately coarsely punctate, punctures separated by 1 to 2 diameters, parapsidal line elevated, notaulus short, distinct; scutellum dull moderately coarsely, shallowly punctate, punctures separated by one diameter or less, closest along midline, laterally and posteriorly; metanotum with punctures contiguous; propodeum moderately closely, moderately coarsely, shallowly punctate with tessellate interspaces, punctures separated by about one diameter with dorsal edges of punctures raised, enclosure nearly longitudinally rugulose basally, transversely tessellate apically; episternum 2 moderately coarsely punctate with tessellate interspaces, punctures separated by about one diameter; wing pale, submarginals 1:2 (31:29.5), stigma : rest of marginal cell (14:19), hind wing with jugal lobe narrow and without incision between it and vannal, reaching beyond level of cu-v; pubescence of mesoscutum long, moderately dense. Metasoma moderately dull, tessellate, finely, shallowly punctate; punctures of first tergum separated by about 2 diameters or slightly less; punctures of terga 2 to 5 indistinct; pubescence moderately long, erect on tergum 1, about half as long, erect on tergum 2, short, subdepressed on terga 3 to 5 with indications of apical hair bands on terga 2 to 5. Length 6 to 6.5 mm, forewing 4.5 to 5.5 mm.
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