ANDRENIDAE 441 



'^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. 

 S. 



"^distans Timberlake. Southern Calif. On flowers of Eriogonum. (Perdita) 



Perdita distans Timberlake, 1962. Calif. Univ. Pubs. Ent. 28: 73, figs. 

 811,812,884. ?, $. 



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 Po- 

 tosi). Taken on flowers of Drymaria holsteoides. 

 Perdita drymariae Timberlake, 1960. In Mitchell, N. C. Agr. Expt. Sta. 

 Tech. Bull. 141: 324. 9, $. 



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

 yiauseosus. (Perdita) 

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



*elegans Timberlake. Calif. (Colorado Desert), Ariz. On flowers of Ahronia, 

 Larrea, Palafoxia, and Pedis. (Perdita) 

 Perdita elegans Timberlake, 1960. Calif. Univ. Pubs. Ent. 17: 55, figs. 

 568, 569, 686, ?, $. 



*ericameriae Timberlake. Southern Calif. On flowers of Aplopappus, Guti- 

 errezia, Lepidospartwrn. (Perdita) 

 Perdita ericameriae Timberlake, 1958. Calif. Univ. Pubs. Ent. 14: 317, 

 figs. 372, 373, 472. ?, $. 



*erythropyga Timberlake. Calif. (Riverside Co.). Collects pollen of Dalea. 

 (Perdita) 

 Perdita erythropyga Timberlake, 1962. Calif. Univ. Pubs. Ent. 28: 42, 

 figs. 773, 774, 865. $, $. 



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

 Kallstroemia. (Epimacrotera) 



*excellens Timberlake. Utah (Grand and Washington Counties). (Procock- 

 erellia) 

 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. $, 9. 



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 f otitis Cockerell. Syn. of fallax (teste Timberlake 1960, 



loc. cit. supra, p. 106). 



fallax f otitis 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 f estiva Timberlake, 1958. Calif. Univ. Pubs. Ent. 14: 321. 9. 



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

 (Perdita) 



