Taxonomy: Knerer and Atwood, 1963, Canad. Ent. 95: 586, figs. 6, 8 (♂). dunningi Cockerell. Minn. to Que., south to N. C. Visiting a number of flowers. (Bythandrena)

*duplicata Mitchell. N. C., Ohio. (Pterandrena)

Andrena (Pterandrena) duplicata Mitchell, 1960. N. C. Agr. Expt. Sta.
Tech. Bull. 141: 144, figs. 24-26, 28. 9, 3.

durangoensis Viereck and Cockerell. Colo. to N. S., south to W. Va. Visiting flowers of Ilex and Rubus. (Conandrena)

Andrena media Viereck (syn. by Mitchell, 1960, loc. cit. supra, p. 229). *eothina Linsley and MacSwain. Calif. (Kern Co.). Visiting flowers of Oenothera. (Diandrena)

Andrena (Diandrena) eothina Linsley and MacSwain, 1961. Pan-Pacific Ent. 37: 39. 9, .

erigeniae Robertson. Minn. to N. Y., south to Ga. On flowers of Claytonia and Erigenia. (Ptilandrena)

erythrogaster erythrogaster (Ashmead). Visits a number of flowers. (Bythandrena)

erythrogaster subaustralis Cockerell. On flowers of Aronia, Brassica, Crataegus, Prunus, Salix and Stellaria. (Bythandrena)

erythronii Robertson. Ill. and Mich. to Que., Maine and Mass. (Leucandrena)

*evoluta Linsley and MacSwain. Calif. (Lassen Co.), Nev. (?). Visiting flowers of Agoseris, Oenothera and Taraxacum. (Diandrena)

Andrena (Diandrena) evoluta Linsley and MacSwain, 1961. Pan-Pacific
Ent. 37: 33. .

fenningeri Viereck. Mich. to N. Y., south to Ga. On flowers of Acer, Amelanchier, Aronia, Malus, Prunus, Salix and Taraxacum. (Trachandrena)

Andrena (Trachandrena) indianensis Cockerell (syn. by Mitchell, 1960, loc. cit. supra, p. 182).

forbesii Robertson. Colo. and Nebr. east to N. S., south to Ga. Visits a number of flowers. (Trachandrena)

foxii Cockerell. Transfer from (Onagrandrena) to (Diandrena).

Taxonomy: Linsley and MacSwain, 1961. Pan-Pacific Ent. 37: 130. fragilis Smith. Eastern Canada and U. S. except Fla., west to Colo. and N. Mex. Visits a number of flowers. Remove lineata Provancher from syn. and transfer to syn. of integra Smith. Remove platyparia Robertson, a valid sp., from syn.

frigida Smith. On flowers of Cornus, Prunus, and Salix. (Andrena) Andrena hirticeps Smith (syn. by Mitchell, 1960, loc. cit. supra, p. 105). Andrena hirtignatha Linsley (n. name for hirticeps Smith).

fulvipennis Smith. N. J. to Fla. on coastal plain. On flowers of Aster, Chrysopsis, Coreopsis and Haplopappus. (Pterandrena)

*furva Linsley and MacSwain. Calif. On flowers of Oenothera. (Onagrandrena)

Andrena (Onagrandrena) furva Linsley and MacSwain, 1961. Pan-Pacific Ent. 37: 117. 9.

fuscisignata Viereck. Syn. of algida Smith.

*gabrielsoni Mitchell. Maine, Conn., N. C., Mich. (Bythandrena)

Andrena (Bythandrena) gabrielsoni Mitchell, 1960. N. C. Agr. Expt.
Sta. Tech. Bull. 141: 115. 9.

gardineri Cockerell. Colo. and Tex. to Va. and Ga. On flowers of Pentstemon, Rubus and Senecio. (Pterandrena)

geranii Robertson. Colo. and Minn. to New England states and Va. Visiting flowers of Arabis, Blephilia, Geranium, Hydrophyllum, Osmorrhiza, and Polemonium. (Thysandrena)

geraniimaculati Viereck. Syn. of distans Provancher.

grundeli bernardina Linsley. Restored to sp. rank.

grundeli grundeli Linsley. Syn. of ominigra omninigra Viereck.

helianthi Robertson. Minn. to Conn., south to Ill. and Ind., west to Utah and N. Mex. On flowers of Aster, Bidens and Helianthus. (Pterandrena)

heraclei Robertson. Kans. to Ill., Va., N. C. Visiting flowers of Crataegus, Cornus, Heracleum, Ptelea, Salix and Taenidia. (Trachandrena) hilaris Smith. Mich. and Ohio to eastern Canada and New England States, south to Ga. and Ala. Visiting a number of flowers. (Gymnandrena)

hippotes Robertson. Transcanadian and northern U. S., in East, south to Ga. Visiting a number of flowers. (Trachandrena)

Andrena miranda Smith, in part (hippotes a valid sp., teste Mitchell, 1960, loc. cit. supra, p. 184).

Andrena perforatella Cockerell (syn. by Mitchell, 1960, loc. cit. supra, p. 184).

hirticincta Provancher. Alta. to N. S., south to Ga. On flowers of Aster, Epilobium and Solidago. (Cnemidandrena)

hirtignatha Linsley. Syn. of frigida Smith.

*ilicis Mitchell. Md. to Fla., Ohio. On flowers of Batodendron, Castanea, Crataegus, Ilex and Prunus. (Trachandrena)

Andrena (Trachandrena) ilicis Mitchell, 1960. N. C. Agr. Expt. Sta. Tech. Bull. 141: 186, fig. 35. .

illinoiensis Robertson. Transcont. in southern Canada and northern U. S., south to S. C. On flowers of Prunus, Salix, Taraxacum, Antennaria, Geranium, Stellaria and Zizia. (Micrandrena)

imitatrix Cresson. Colo., Minn., Ont., and New England States, south to Tex. and Fla. Visits a number of flowers. (Mimandrena)

Andrena (Mimandrena) albofoveata (Graenicher) (syn. by Mitchell, 1960, loc. cit. supra, p. 205).

indianensis Cockerell. Syn. of fenningeri Viereck.

integra Smith. Minn. to Que. and New England States, south to Ga. Visiting flowers of Ceanothus and Cornus. (Gonandrena)

Andrena lineata Provancher not a syn. of fragilis Smith but of integra (teste Mitchell, 1960, loc. cit. supra, p. 232).

kalmiae Atwood. N. S. to N. C. On flowers of Kalmia, Ledum and Vaccinium. (Trachandrena)

krigiana Robertson. Ill. to Conn., south to Tex. and Ga. On flowers of Krigia amplexicaulis. (Ptilandrena)

lata Viereck. Minn. to N. S. south to Ga. Visiting flowers of Brassica, Hydrangea, Potentilla, Prunus, Pyrus and Rubus. (Thysandrena) Andrena vulgaris Viereck (syn. by Mitchell, 1960, loc. cit. supra, p. 223). lauracea Robertson. Ill. On flowers of Sassafras variifolium. (Pterandrena) linsleyi Timberlake. (Onagrandrena)

Biology: Linsley, MacSwain and Raven, 1963. Univ. Calif. Pubs. Ent. 33: 11-16.

macoupinensis Robertson. Ill., Mass., N. C. On flowers of Prunus, Salix, and Vicia. (Andrena)

*macswaini Linsley. Calif. (San Joaquin valley). Visiting flowers of Oenothera dentata. (Diandrena)

Andrena (Diandrena) macswaini Linsley, 1960. Pan-Pacific Ent. 36: 97. , 3.

Taxonomy: Linsley and MacSwain, 1961. Pan-Pacific Ent. 37: 36.

mandibularis Robertson. Minn. and Ont., east to N. S., south to Ga. On many flowers. (Andrena)

mariae Robertson. Colo. and Minn. to N. S., south to Ga. Visiting many flowers. (Trachandrena)

media Viereck. Syn. of durangoensis Viereck and Cockerell.

melanochroa fragariana Graenicher. Minn. to N. S., south to Ga. On flowers of Fragaria, Potentilla and Rubus. (Micrandrena)

*mendica Mitchell. Va., N. C., Tenn., Ohio. On flowers of Aruncus and Ceanothus. (Trachandrena)

Andrena (Trachandrena) mendica Mitchell, 1960. N. C. Agr. Expt. Sta.
Tech. Bull. 141: 189, figs. 35-37, 40. 9, ♂.

milwaukeensis Graenicher. Minn. to N. S., south to Ga. On flowers of Aruncus, Cornus, Ilex, Pyrus, Rubus and Viburnum. (Andrena) miranda Smith. Transcont. in southern Canada and northern U. S., south to N. Mex. and Ga. Visiting flowers of Ceanothus, Prunus, Rosa, Rubus and Zizia. (Trachandrena)

Andrena miranda Smith, in part (delete hippotes Robertson, a valid sp., and its syn. perforatella Cockerell from syn. of miranda, teste Mitchell, 1960, loc. cit. supra, p. 190).

miserabilis bipunctata Cresson, changed status. Eastern Canada to Ga., west to Calif., Colo., and Tex. Visiting a number of flowers. (? Micrandrena)

Andrena bipunctata Cresson (made a subsp. by Mitchell, 1960, loc. cit. supra, p. 195. N. B., miserabilis Cresson and scutellata Dalla Torre removed from syn. and made separate subspp.).

Andrena (Micrandrena) salicinellina Viereck and Cockerell (syn. by Mitchell, 1960, loc. cit. supra, p. 159).

miserabilis miserabilis Cresson, changed status. N. C. to Tex. On flowers of Amelanchier, Aronia, Crataegus, and Prunus. (? Micrandrena)

Andrena miserabilis Cresson reduced to subsp. rank (teste Mitchell, 1960, loc. cit. supra, p. 160).

miserabilis scutellata Dalla Torre. Coastal belt of N. C. to Fla., Miss. On flowers of Prunus angustifolia. (? Micrandrena)

Andrena scutellata Dalla Torre (removed from syn. of miserabilis and raised to subsp. rank, teste Mitchell, 1960, loc. cit. supra, p. 160).

*monroensis Mitchell. Mich. (Gonandrena)

Andrena (Gonandrena) monroensis Mitchell, 1960. N. C. Agr. Expt. Sta. Tech. Bull. 141: 233. .

*montensis Mitchell. Vt. to N. C., Mich., Wis., Ohio. On flowers of Hydrangea, Rhus and Zizia. (Trachandrena)

Andrena (Trachandrena) montensis Mitchell, 1960. N. C. Agr. Expt.
Sta. Tech. Bull. 141: 191, fig. 35. 9.

morrisonella Viereck. Minn. to New England States, south to Ga. Visiting flowers of Crataegus, Gypsophila, Ilex, Malus, Prunus, Rubus, and Salix. (Trachandrena)

nasonii Robertson. Eastern Canada and Minn., south to Ga. and Tex., Colo. Visits a number of flowers. (Simandrena)

neonana Viereck. Ind. and Ohio south to La. and Fla. On flowers of Ilex and Malus. (Micrandrena)

*nevadae Linsley and MacSwain. Nev. Visiting flowers of Oenothera for pollen, and of Stanleya. (Onagrandrena)

Andrena (Onagrandrena) nevadae Linsley and MacSwain, 1961. Pan-
Pacific Ent. 37: 125. 9.

*nida Mitchell. Md. to N. C., Mich., Miss. Taken on flowers of Amelanchier, Prunus and Salix. (Parandrena)

Andrena (Parandrena) nida Mitchell, 1960. N. C. Agr. Expt. Sta. Tech. Bull. 141: 240, fig. 49, 50, 52, 55. 9, ♂.

nigrae Robertson. Ill., Minn. On flowers of Salix and Antennaria. (Micrandrena)

nivalis Smith. Que. to Ga., west to B. C., Oreg. and N. Mex. On flowers of Hydrangea, Rhododendron, Rubus and Vagnera. (Gymnandrena) Andrena (Gymnandrena) semirufa Cockerell (syn. by Mitchell, 1960, loc. cit. supra, p. 128, figs. 22, 23).

nivaloides Graenicher. Syn. of novaeangliae Viereck.

nothocalaidis (Cockerell). Remove perchalybea Viereck from syn., and transfer to syn. of chalybioides. (Diandrena)

Taxonomy: Linsley and MacSwain, 1961. Pan-Pacific Ent. 37: 33.

novaeangliae Viereck. Alta., Minn. and Ill. east to N. S. and N. Y. Visiting flowers of Angelica. (Thysandrena)

Andrena nivaloides Graenicher (syn. by Mitchell, 1960, loc. cit. supra, p. 224).

nubecula Smith. B. C. to eastern Canada, south to Ga. On flowers of Aster, Euthamia and Solidago. (Cnemidandrena)

nuda Robertson. Colo. to N. Y., south to Ga. Visiting a number of flowers. (Trachandrena)

obscura (Robertson). Ill. and Mich. to N. B., south to N. C. Visting flowers of Ceanothus and Pycnanthemum. (Trachandrena)

obscuripennis Smith. N. J. (?), N. C., Ga., La. (?). On flowers of Batodendron, Crataegus, Ilex and Padus. (Gymnandrena)

oenotherae Timberlake. Calif. (Coastal Santa Barbara Co. east to Colorado Desert); Mexico (Baja California). Collects pollen of Oenothera cheiranthifolia suffruticosa. (Onagrandrena)

Taxonomy: Linsley and MacSwain, 1963. Pan-Pacific Ent. 39: 189-190. olivacea Viereck. Visiting flowers of Oenothera, Malacothrix and Coreopsis. (Diandrena)

Taxonomy: Linsley and MacSwain, 1961. Pan-Pacific Ent. 37: 35. *omninigra__clarkiae Linsley and MacSwain. Calif. (Monterey Co.). On flowers of Clarkia. (Onagrandrena)

Andrena (Onagrandrena) omninigra clarkiae Linsley and MacSwain, 1961. Pan-Pacific Ent. 37: 127. 9, ô.

omninigra omninigra Viereck, changed status. (Onagrandrena)

Andrena omninigra Viereck. Reduced to subsp. rank (teste Linsley and MacSwain, 1961. Pan-Pacific Ent. 37: 127).

Andrena grundeli grundeli Linsley. Syn. by Linsley and MacSwain, 1961, loc. cit. supra, p. 127.

*oraria actitis Linsley and MacSwain. Calif. (San Francisco). Collects pollen of Oenothera c. cheiranthifolia. (Onagrandrena)

Andrena (Onagrandrena) oraria actitis Linsley and MacSwain, 1963.
Pan-Pacific Ent. 39: 196. 9, 3.

*oraria oraria Linsley and MacSwain. Calif. (Marin Co.). Collects pollen of Oenothera c. cheiranthifolia and Oe. ovata. (Onagrandrena)

Andrena (Onagrandrena) oraria oraria Linsley and MacSwain, 1963.
Pan-Pacific Ent. 39: 196. ?, ô.

*osmioides benitonis Lanham. Northern Calif. On flowers of Cryptantha. (Scoliandrena)

Andrena osmioides benitonis Lanham, 1949. Pan-Pacific Ent. 25: 148. 9,

ô.

osmioides osmioides Cockerell, changed status. (Scoliandrena)

Andrena osmioides Cockerell. Reduced to subsp. rank (teste Lanham, 1949. Pan-Pacific Ent. 25: 149).

paenerugosa Viereck. Syn. of rugosa Robertson. Correct spelling of specific heading and in citation for paenerugosa.

*parakrigiana Mitchell. Ga. (Butler). (Ptilandrena)

Andrena (Ptilandrena) parakrigiana Mitchell, 1960. N. C. Agr. Expt.
Sta. Tech. Bull. 141: 157. ♂.

parnassiae Cockerell. Mich., Wis., Vt. (Leucandrena)

peckhami Cockerell. Minn. to Vt., south to N. C. Taken on flowers of Baptisia and Solidago. (Gonandrena)

perplexa Smith. Minn., Mich. and N. Y. south to Tex. and Ga. Visiting a number of flowers. (Bythandrena)

persimulata Viereck. N. S. to Alta. south to N. Y. and Minn. Visiting flowers of Cornus and Viburnum. (Gonandrena)

personata Robertson. Minn. to Conn., south to Ga. Visiting a number of flowers. (Micrandrena)

*phaceliae Mitchell. Md., Va., Ill. Visiting flowers of Alsine and Phacelia. (Thysandrena)

Andrena (Thysandrena) phaceliae Mitchell, 1960. N. C. Agr. Expt. Sta.
Tech. Bull. 141: 224, figs. 44, 45. 9, 8.

phenax Cockerell. Remove from (? Onagrandrena).

Taxonomy: Linsley and MacSwain, 1961. Pan-Pacific Ent. 37: 129.

*picta Mitchell. N. Y. (Ithaca). (Leucandrena)

Andrena (Leucandrena) picta Mitchell, 1960. N. C. Agr. Expt. Sta.
Tech. Bull. 141: 214. 9.

*placata Mitchell. Mass., Conn., Va., Mich., Minn. (Pterandrena)

Andrena (Pterandrena) placata Mitchell, 1960. N. C. Agr. Expt. Sta.
Tech. Bull. 141: 148, figs. 24, 25. ♂.

placida placida Smith. Visiting flowers of Acer, Amelanchier, Fragaria, Prunus, Pyrus, Taraxacum and Viburnum. (Leucandrena)

platyparia Robertson. New England and Ont. south to N. C. and Tex. Visiting flowers of Cornus and Viburnum. (Gonandrena)

Andrena (Gonandrena) fragilis Smith, in part, of Catalog. A. platyparia Robertson is a valid sp., not a syn. (teste Mitchell, 1960 loc. cit. supra, p. 236).

Andrena (Gonandrena) barbarica Viereck (syn. by Mitchell, 1960, loc. cit. supra, p. 236).

polemonii Robertson. Ill., Mich. On flowers of Geranium, Polemonium and Ranunculus. (Ptilandrena)

prima Casad. Transfer from (Onagrandrena) to (Melandrena).

Taxonomy: Linsley and MacSwain, 1961. Pan-Pacific Ent. 37: 129.

pruni Robertson. Minn. and Ill. to Mass., south to Ga. Visiting a number of flowers. (Bythandrena)

pseudobscura Mitchell. Maine to N. C., Mich., Ind. Visiting a number of flowers. (Trachandrena)

Andrena (Trachandrena) pseudobscura Mitchell, 1960. N. C. Agr. Expt.
Sta. Tech. Bull. 141: 193, fig. 36. 3.

*pyracanthae Mitchell. N. C. On flowers of Crataegus, Pyracantha and Rubus. (Trachandrena)

Andrena (Trachandrena) pyracanthae Mitchell, 1960. N. C. Agr. Expt.
Sta. Tech. Bull. 141: 194, fig. 35. 9.

*raveni Linsley and MacSwain. Oreg., Calif., Nev., Utah. Visiting flowers of Oenothera for pollen, and of Agoseris and Madia for nectar. (Onagrandrena)