438 HYMENOPTERA OF AMERICA NORTH OF MEXICO 



*aridella Timberlake. Utah, Ariz. On flowers of Gutierrezia and Helianthus. 

 (Perdila) 

 Perdita aridella Timberlake, 1960. Calif. Univ. Pubs. Ent. 17: 81, figs. 

 600,601,702. 9, 5. 



*atriventris Timberlake. Tex. (Calvert). On flowers of Heterotheca subaxil- 

 laris. (Perdita) 

 Perdita atriventris Timberlake, 1960. Calif. Univ. Pubs. Ent. 17: 111, 

 figs. 640,641,722. $. 



austini Cockerell. (Perdita) 



Taxonomy: Timberlake, 1962, loc. cit. supra, p. 40. $. 



baccharidis Cockerell. Calif. (Riverside and Imperial Counties). (Perdita) 

 Taxonomy: Timberlake, 1958, loc. cit. supra, p. 352, figs. 428, 429, 498. 

 9,$. 



beata beata Cockerell, changed status. Another subspecies occurs in Mexico. 

 (Cockerellia) 

 Perdita beata Cockerell. Reduced to subsp. rank (teste Timberlake, 1960, 

 loc. cit. supra, p. 130). 



*beatula Timberlake. Nev. (Humboldt Co.). (Perdita) 



Perdita beatula Timberlake, 1960. Calif. Univ. Pubs. Ent. 17: 22, figs. 

 522, 523, 662. $. 



bequaertiana Cockerell. N. Mex. (Albuquerque). (Xerophasma) 



*bicuspidariae Timberlake. Southern Calif, (deserts). Collects pollen of 

 Mentzelia involucrata (Perdita) 

 Perdita bicuspidariae Timberlake, 1962. Calif. Univ. Pubs. Ent. 28: 20, 

 figs. 741, 742, 849. $, ?. 



bigeloviae Cockerell. N. Mex., Tex., Colo. On flowers of Aplopappus hetero- 

 phyllus. (Perdita) 

 Taxonomy: Timberlake, 1960, loc. cit. supra, p. 71, figs. 588, 589, 696. 9, 



5. 



*biguttaia Timberlake. Ariz. (Douglas in Cochise Co.). On flowers of Erio- 

 gonum. (Epimacrotera) 

 Perdita biguttata Timberlake, 1962. Calif. Univ. Pubs. Ent. 28: 95. 9. 



biparticeps Cockerell. (Perdita) 



*blanda Timberlake. N. Mex. (Albuquerque). (Perdita) 



Perdita blanda Timberlake, 1958. Calif. Univ. Pubs. Ent. 14: 358. 9. 



*brevihirta Timberlake. Ariz. (Maricopa Co.). On flowers of Pedis pap- 

 posa. (Perdita) 

 Perdita brevihirta Timberlake, 1962. Calif. Univ. Pubs. Ent. 28: 41, figs. 



771,772,864. 9, $. 



*bridwelli Timberlake. Ariz., Calif. On flowers of Sphaeralcea. (Perdita) 



Perdita bridwelli Timberlake, 1960. Calif. Univ. Pubs. Ent. 17: 34, figs. 

 542,543,673. 9, 3. 



bruneri Cockerell. Tex. to Man. and Alta. east of Rocky Mts. On flowers of 

 Grindelia and other Compositae. (Perdita) 

 Taxonomy: Timberlake, 1960, loc. cit. supra, p. 101, figs. 628, 629, 716. 



9, $. 



*butleri Timberlake. Ariz. On flowers of Hymenothrix and Pedis. (Perdita) 

 Perdita butleri Timberlake, 1960. Calif. Univ. Pubs. Ent. 17: 96, figs. 

 624,625,714. 9, $. 



*cara Timberlake. Tex. (Reeves Co.). On flowers of Prosopis. (Hexaper- 

 dita) 

 Perdita cara Timberlake, 1958. Calif. Univ. Pubs. Ent. 14: 388, figs. 466, 

 467,518. $. 



Carolina Timberlake. Syn. of obscurata Cresson. 



