chamaesarachae Cockerell. Mexico (Durango). (Perdita)

Taxonomy: Timberlake, 1958, loc. cit. supra, p. 371, figs. 450, 451, 509. , ô.

*chloris Timberlake. Calif., Nev., Ariz. On flowers of Dalea polyadenia. (Perdita)

Perdita chloris Timberlake, 1960. Calif. Univ. Pubs. Ent. 17: 64, figs. 576, 577, 690. f, 8.

*chrysothamni Timberlake. Calif. (Mohave Desert). On flowers of Chrysothamnus. (Perdita)

Perdita chrysothamni Timberlake, 1958. Calif. Univ. Pubs. Ent. 14: 319, figs. 374, 375, 473. 9, ♂.

*claypolei australior Timberlake. Calif. (San Diego and Los Angeles Counties). On flowers of Eriogonum. (Perdita)

Perdita claypolei australior Timberlake, 1962. Calif. Univ. Pubs. Ent. 28: 68., .

claypolei claypolei Cockerell, changed status. Southern Calif. Collects pollen of Eriogonum. (Perdita)

Perdita claypolei Cockerell. Reduced to subsp. rank (teste Timberlake, 1962, loc. cit. supra, p. 66, figs. 805, 806, 881. 9, 5.

*claypolei limatula Timberlake. Calif. (Kern Co.) to Oreg. Collects pollen of Eriogonum. (Perdita)

Perdita claypolei limatula Timberlake, 1962. Calif. Univ. Pubs. Ent. 28: 68., 3.

cleomellae Cockerell. Calif. (San Bernardino, Inyo, and Kern Counties). On flowers of Cleomella. (Perdita)

Taxonomy: Timberlake, 1958, loc. cit. supra, p. 353, figs. 430, 431, 499. f, 3.

*clypeata clypeata Timberlake. Southern Calif. On flowers of Eriogonum inflatum. (Perdita)

Perdita clypeata clypeata Timberlake, 1962. Calif. Univ. Pubs. Ent. 28: 79, figs. 817, 818, 887. 9, ô.

*clypeata immaculata Timberlake. Ariz., southern Calif. On flowers of Eriogonum inflatum. (Perdita)

Perdita clypeata immaculata Timberlake, 1962. Calif. Univ. Pubs. Ent. 28: 80., 3.

*cognata Timberlake. Wyo. (Sweetwater Co.). (Perdita)

Perdita cognata Timberlake, 1960. Calif. Univ. Pubs. Ent. 17: 93, figs. 616, 617, 710. 6.

*colei Timberlake. Calif. (San Bernardino Co.). On flowers of Chrysothamnus, Gutierrezia, Lepidospartum, and Solidago. (Perdita)

Perdita colei Timberlake, 1962. Calif. Univ. Pubs. Ent. 28: 48, figs. 783, 784, 870. 4, ô.

consobrina consobrina Timberlake. (Perdita)

Taxonomy: Timberlake, 1960, loc. cit. supra, p. 109, figs. 638, 639, 721. , 3.

consobrina lepida Timberlake. (Perdita)

*covilleae Timberlake. Southern Calif., Nev., Ariz.; Mexico (Baja California). On flowers of Baeria, Heliotropium, Larrea. (Perdita) Perdita covilleae Timberlake, 1958. Calif. Univ. Pubs. Ent. 14: 361, figs. 438, 439, 503. o, ô.

*crandalli Timberlake. Ariz. (Pima and Pinal Counties). On flowers of Petalonyx thurberi. (Perdita)

Perdita crandalli Timberlake, 1962. Calif. Univ. Pubs. Ent. 28: 38. 9.

crassa Timberlake. Tex. (Sutton and Gillespie Counties). On flowers of Opuntia. (Macrotera)

Perdita crassa Timberlake, 1958. Calif. Univ. Pubs. Ent. 14: 376, figs. 456, 457, 512. 9, ♂.

*crassula Timberlake. N. Mex. (Las Cruces). (Epimacrotera)

Perdita crassula Timberlake, 1958. Calif. Univ. Pubs. Ent. 14: 381, figs. 462, 463, 516. 3.

Taxonomy: Timberlake, 1962, loc. cit. supra, p. 93. f.

*croceipes Timberlake. Ariz. (Yavapai Co.). On flowers of Gutierrezia microcephala. (Perdita)

Perdita croceipes Timberlake, 1960. Calif. Univ. Pubs. Ent. 17: 72, figs. 590, 591, 697. .

*crotonis caerulea Timberlake. Utah, Nev. On flowers of Croton longipes. (Perdita)

Perdita crotonis caerulea Timberlake, 1960. Calif. Univ. Pubs. Ent. 17:

47. 6.

crotonis crotonis Cockerell. N. Mex., Ariz.; Mexico (Chihuahua). (Perdita) Taxonomy: Timberlake, 1960, loc. cit. supra, p. 44, figs. 558, 559, 681. 9, 6.

*crotonis cucullata Timberlake. Calif. (Anza). On flowers of Croton californicus. (Perdita)

Perdita crotonis cucullata Timberlake, 1960. Calif. Univ. Pubs. Ent. 17: 46., .

*crotonis decipiens Timberlake. Tex. (Victoria). (Perdita)

Perdita crotonis decipiens Timberlake, 1960. Calif. Univ. Pubs. Ent. 17:

*crotonis dilucida Timberlake. Ariz., possibly Kans. and Nebr. On flowers of Euphorbia. (Perdita)

Perdita crotonis dilucida Timberlake, 1960. Calif. Univ. Pubs. Ent. 17: 47., 8.

*crotonis juabensis Timberlake. Utah (Juab Co.). On flowers of Croton texensis. (Perdita)

Perdita crotonis juabensis Timberlake, 1962. Calif. Univ. Pubs. Ent. 28: 103.9, .

*crotonis leucoptera Timberlake. Southern Calif. On flowers of Croton and Hoffmanseggia. (Perdita)

Perdita crotonis leucoptera Timberlake, 1960. Calif. Univ. Pubs. Ent. 17: 45., 6.

*crotonis subnitens Timberlake. Kans. On flowers of Croton monanthogynus. (Perdita)

Perdita crotonis subnitens Timberlake, 1960. Calif. Univ. Pubs. Ent. 17: 48. 9.

*crotonis titusi Timberlake. Calif. (Chino). (Perdita)

Perdita crotonis titusi Timberlake, 1960. Calif. Univ. Pubs. Ent. 17: 46. f, 3.

crotonis undecimalis Cockerell. N. Mex. On Croton. (Perdita) Taxonomy: Timberlake, 1960, loc. cit. supra, p. 45. 9.

dallasiana Cockerell. A subsp. of gerhardi Viereck.

*dalyi Timberlake. Tex. (El Paso). On flowers of Aplopappus. (Perdita) Perdita dalyi Timberlake, 1960. Calif. Univ. Pubs. Ent. 17: 119. 9. dasylirii Cockerell. Western Tex. to Ariz. On many flowers. (Perdita) Taxonomy: Timberlake, 1962, loc. cit. supra, p. 55, figs. 793, 794, 875, 9, 3.

*dicksoni Timberlake. Calif. (Inyo Co.). On flowers of Chrysothamnus albidus. (Perdita)

Perdita dicksoni Timberlake, 1958. Calif. Univ. Pubs. Ent. 14: 328, figs. 392, 393, 480. 9, 3.

*dilecta Timberlake. Utah, Tex. (Perdita)

Perdita dilecta Timberlake, 1960. Calif. Univ. Pubs. Ent. 17: 40, figs. 554, 555, 679. 9, ♂.

*dimidiata Timberlake. Ariz. (Pinal Co.); Mexico (Baja California). On flowers of Sesuvium verrucosum. (Perdita)

Perdita dimidiata Timberlake, 1962. Calif. Univ. Pubs. Ent. 28: 39, figs. 767, 768, 862. ♂.

discreta Timberlake. (Perdita)

Taxonomy: Timberlake, 1960, loc. cit. supra, p. 115, figs. 646, 647, 725. 3.

*distans Timberlake. Southern Calif. On flowers of Eriogonum. (Perdita) Perdita distans Timberlake, 1962. Calif. Univ. Pubs. Ent. 28: 73, figs. 811, 812, 884. 4, ô.

dolichocephala Swenk and Cockerell. Nebr., Kans., Colo. On flowers of Amorpha, Boltonia, Euphorbia, Helianthus, and Heterotheca. (Perdita)

Taxonomy: Timberlake, 1960, loc. cit. supra, p. 116, figs. 648, 649, 726. *drymariae Timberlake. N. Mex. (Dona Ana Co.); Mexico (San Luis Potosi). Taken on flowers of Drymaria holsteoides.

Perdita_drymariae Timberlake, 1960. In Mitchell, N. C. Agr. Expt. Sta. Tech. Bull. 141: 324. 9, ô.

*electa Timberlake. Wyo. (Sweetwater Co.). On flowers of Chrysothamnus nauseosus. (Perdita)

Perdita electa Timberlake, 1960. Calif. Univ. Pubs. Ent. 17: 86. G.

*elegans Timberlake. Calif. (Colorado Desert), Ariz. On flowers of Abronia, Larrea, Palafoxia, and Pectis. (Perdita)

Perdita elegans Timberlake, 1960. Calif. Univ. Pubs. Ent. 17: 55, figs. 568, 569, 686, 4, ♂.

*ericameriae Timberlake. Southern Calif. On flowers of Aplopappus, Gutierrezia, Lepidospartum. (Perdita)

Perdita ericameriae Timberlake, 1958. Calif. Univ. Pubs. Ent. 14: 317, figs. 372, 373, 472. 9, ♂.

*erythropyga_Timberlake. Calif. (Riverside Co.). Collects pollen of Dalea. (Perdita)

Perdita erythropyga Timberlake, 1962. Calif. Univ. Pubs. Ent. 28: 42, figs. 773, 774, 865. 9, 6.

euphorbiae Timberlake. Mexico (Sonora). On flowers of Euphorbia and Kallstroemia. (Epimacrotera)

*excellens Timberlake. Utah (Grand and Washington Counties). (Procockerellia)

Perdita excellens Timberlake, 1958. Calif. Univ. Pubs. Ent. 14: 384. 9. *exilis Timberlake. Southern Calif. (deserts). Collects pollen of Petalonyx thurberi. (Perdita)

Perdita exilis Timberlake, 1962. Calif. Univ. Pubs. Ent. 28: 36, figs. 763, 764, 860. ♂, d.

fallax Cockerell, changed status. Tex. to Ariz., north to Nebr. and Mont. Visits Helianthus and other Compositae. (Perdita)

Perdita fallax fallax Cockerell. Raised to sp. rank (teste Timberlake, 1960, loc. cit. supra, p. 106, figs. 634, 635, 719).

Perdita fallax fontis Cockerell. Syn. of fallax (teste Timberlake 1960, loc. cit. supra, p. 106).

fallax fontis Cockerell. Syn. of fallax Cockerell.

*fasciata Timberlake. Colo. (Crook). (Perdita)

Perdita fasciata Timberlake, 1960. Calif. Univ. Pubs. Ent. 17: 57. 9.

*festiva Timberlake. Utah (Emery Co.). (Perdita)

Perdita festiva Timberlake, 1958. Calif. Univ. Pubs. Ent. 14: 321. 9.

*flavicauda flavicauda Timberlake. Calif. (Indio). On flowers of Melilotus.

(Perdita)

Perdita flavicauda flavicauda Timberlake, 1960. Calif. Univ. Pubs. Ent. 17: 39. 9. (Misspelled flavicanda flavicanda in key, p. 4.)

*flavicauda_formosa Timberlake. Calif. (near Blythe). On flowers of Nama hispidum. (Perdita)

Perdita flavicauda formosa Timberlake, 1960. Calif. Univ. Pubs. Ent. 17: 40. . (Misspelled flavicanda formosa in key, p. 4.)

*flaviceps Timberlake. Nev. (Las Vegas). (Perdita)

Perdita flaviceps Timberlake, 1960. Calif. Univ. Pubs. Ent. 17: 37, figs. 548, 549, 676. 3.

*foleyi Timberlake. Calif. (Tulare Co.). (Perdita)

Perdita foleyi Timberlake, 1958. Calif. Univ. Pubs. Ent. 14: 347, figs. 418, 419, 493. 9, 3.

foveata foveata Timberlake. Tex., Fla. On flowers of Coreopsis, Hymenopappus. (Hexaperdita)

fraterna Timberlake. Ariz. On flowers of Gutierrezia microcephala. (Perdita)

Taxonomy: Timberlake, 1958. Calif. Univ. Pubs. Ent. 14: 329, figs. 394, 395, 481.9, 5.

*fulvicauda Timberlake. Southern Calif.; Mexico (Baja California). On flowers of Baileya, Dalea, Coldenia, Larrea, Melilotus, Nama, Phacelia and Prosopis. (Perdita)

Perdita fulvicauda Timberlake, 1962. Calif. Univ. Pubs. Ent. 28: 43, figs. 775, 776, 866. 9, 3.

*gentilis Timberlake. Nev. (Churchill and Washoe Counties). (Perdita) Perdita gentilis Timberlake, 1962. Calif. Univ. Pubs. Ent. 28: 78. 9. gerardiae Crawford. (Perdita)

Taxonomy: Timberlake, 1960, loc. cit. supra, p. 68, figs. 582, 583, 693. 9,

8.

gerhardi arenicola Timberlake. Syn. of gerhardi gerhardi Viereck.

gerhardi dallasiana Cockerell, changed status. On flowers of Aster, Dalea, Helianthus, and Monarda. (Perdita)

Perdita dallasiana Cockerell. Reduced to subsp. rank (teste Timberlake, 1960, loc. cit. supra, p. 28, figs. 534, 535, 668).

gerhardi gerhardi Viereck. Wis., Ill., Ind. (Perdita)

Perdita gerhardi arenicola Timberlake (syn. by Timberlake, 1960, loc. cit. supra, p. 27).

gerhardi monardae Viereck. N. J., Va., Fla. (Perdita).

Taxonomy: Timberlake, 1960, loc. cit. supra, p. 28. 9, 3.

*glabrescens Timberlake. Calif. (Inyo Co.). (Perdita)

Perdita glabrescens Timberlake, 1962. Calif. Univ. Pubs. Ent. 28: 38, figs. 765, 766, 861. ?, ♂.

grandiceps Cockerell. (Perdita)

Taxonomy: Timberlake. 1962, loc. cit. supra, p. 32, figs. 757, 758, 857. 9, 3.

gutierreziae Cockerell. Nebr., Colo., Tex., N. Mex., Ariz. On flowers of Chrysothamnus, Gutierrezia, and Solidago. (Perdita)

Taxonomy: Timberlake, 1960, loc. cit. supra, p. 74, figs. 594, 595, 699. ?, ô.

*haigi Timberlake. Nev. (Churchill Co.). (Perdita)

Perdita haigi Timberlake, 1962. Calif. Univ. Pubs. Ent. 28: 100, figs. 833, 834, 895. 9, ♂.

halictoides Smith. Mich. and Ind., west to N. Dak., Colo., and Tex.; Fla. (Perdita)

Perdita punctata Cockerell (syn. by Timberlake, 1960, loc. cit. supra, p.

Perdita maura Cockerell (syn. by Timberlake, 1960, loc. cit. supra, p. 135).

*halli Timberlake. Calif. (Palm Springs). (Perdita)

Perdita halli Timberlake, 1960. Calif. Univ. Pubs. Ent. 17: 89, figs. 612, 613, 708. 9, ♂.

haplura Cockerell. (Macroteropsis)

Taxonomy: Timberlake, 1960, loc. cit. supra, p. 124. 9.-Timberlake, 1962, loc. cit. supra, p. 87, text fig. A. 3.

heliotropii heliotropii Cockerell, changed status. Southern Calif., Nev., Ariz., N. Mex., Tex.; Mexico (Baja California, Sonora, Chihuahua). On flowers of Larrea, Tamarix. (Perdita)

Perdita heliotropii Cockerell. Reduced to subsp. rank (teste Timberlake, 1958, loc. cit. supra, p. 364, figs. 442, 443, 505, 521).

*heliotropii_perducta Timberlake. Central Calif. On flowers of Heliotropium, Stanleya. (Perdita)

Perdita heliotropii perducta Timberlake, 1958. Calif. Univ. Pubs. Ent. 14: 365. 9, ♂.

*heterothecae trizonata Timberlake. Ariz. (Willcox). On flowers of Aster and Euphorbia. (Hexaperdita)

Perdita heterothecae trizonata Timberlake, 1962. Calif. Univ. Pubs. Ent. 28: 96. 4, ô.

hirsuta Cockerell. N. Mex., Ariz. On flowers of Dalea. (Perdita)

Taxonomy: Timberlake, 1960, loc. cit. supra, p. 66, figs. 580, 581, 692. f, ô.

*hirticeps apicata Timberlake. Calif. (Mohave Desert). On flowers of Stephanomeria and Malacothrix. (Perdita)

Perdita hirticeps apicata Timberlake, 1960. Calif. Univ. Pubs. Ent. 17: 59., .

*hirticeps candidipennis Timberlake. Utah (Oak City). On flowers of Helianthus. (Perdita)

Perdita_hirticeps candidipennis Timberlake, 1960. Calif. Univ. Pubs.
Ent. 17: 60. .

*hirticeps hirticeps Timberlake. Calif. (cismontane). On flowers of Coreopsis, Hemizonia and Stephanomeria. (Perdita)

Perdita hirticeps hirticeps Timberlake, 1960. Calif. Univ. Pubs. Ent. 17: 58, figs. 570, 571, 687. 9, 3.

*hirticeps luteocincta Timberlake. Calif. (Antioch). On flowers of Gutierrezia californica. (Perdita)

Perdita hirticeps luteocincta Timberlake, 1960. Calif. Univ. Pubs. Ent. 17: 60. 9.

*holoxantha Timberlake. Utah (Washington Co.). (Perdita)

Perdita holoxantha Timberlake, 1962. Calif. Univ. Pubs. Ent. 28: 17, figs. 737, 738, 847. ♂.

hurdi Timberlake. Mexico (Sonora). On flowers of Proboscidia. (Glossoperdita)

Biology: Hurd and Linsley, 1963. Kans. Ent. Soc. Jour. 36: 248-252, 5 figs.

hyalina Cresson. Syn. of albipennis Cresson.

*idahoensis Timberlake. Idaho (Cassia Co.). On flowers of Chrysothamnus. (Pentaperdita)

Perdita idahoensis Timberlake, 1958. Calif. Univ. Pubs. Ent. 14: 385, figs. 464, 465, 517. 3, 9.

*ignota basalis Timberlake. Tex. (Hidalgo Co.); Mexico (Tamaulipas). (Hexaperdita)

Perdita ignota basalis Timberlake, 1958. Calif. Univ. Pubs. Ent. 14: 391.