450 HYMENOPTERA OP AMERICA NORTH OF MEXICO 



*punctulata Timberlake. Southern Calif., Ariz.; Mexico (Baja California, 

 Sonora). On flowers of Baccharis, Larrea, Melilotus, Prosopis. 

 (Perdita) 

 Perdita punctulata Timberlake, 1958. Calif. Univ. Pubs. Ent. 14: 362, 

 figs. 440,441,504. $, ?. 



purpurascens Timberlake. On flowers of Aster, Brazoria, Gaillardia, Mon- 

 arda. (Cockerellia) 

 Taxonomy: Timberlake, 1958, loc. cit. supra, p. 382. 9. 



rectangulata Cockerell. Colo., Idaho. On flowers of Gutierrezia and Solidago. 

 (Perdita) 

 Taxonomy: Timberlake, 1960, loc. cit. supra, p. 82, figs. 602, 603, 703. ?, 



rehni rehni Cockerell, changed status. N. Mex., western Tex.; Mexico (Chi- 

 huahua). On flowers of Nolina. (Perdita) 

 Perdita rehni Cockerell. Reduced to subsp. rank {teste Timberlake, 1962, 

 loc. cit. supra, p. 50, figs. 789, 790, 873. 9, $. Another subsp. 

 occurs in Coahuila, Mexico. 



*retusa Timberlake. Ariz., Calif. On flowers of Chrysothamnus. (Perdita) 



Perdita retusa Timberlake, 1960. Calif. Univ. Pubs. Ent. 17: 86, figs. 

 608,609,706. 9, $. 



rhodura Cockerell. Ariz., N. Mex., Nebr. On flowers of Aplopappus (?), 

 Gutierrezia, Zinnia. (Perdita) 

 Taxonomy: Timberlake, 1960, loc. cit. supra, p. 52, figs. 564, 565, 684. 9, 



rhois reducta Cockerell. Calif. On many flowers. (Perdita) 

 Taxonomy: Timberlake, 1962, loc. cit. supra, p. 54. 9, $. 



rhois rhois Cockerell. Southern Calif.; Mexico (Baja California). Visits 

 many flowers. (Perdita) 

 Taxonomy: Timberlake, 1962, loc. cit. supra, p. 53, flgs. 791, 792, 874. 9, 



*rivalis Timberlake. Calif. On flowers of Aster, Erigeron. (Perdita) 



Perdita rivalis Timberlake, 1958. Calif. Univ. Pubs. Ent. 14: 349, figs. 

 424,425,496. 9, $. 



ruficauda ornata Timberlake. A subsp. of trisignata Cockerell. 



ruficauda ruficauda Cockerell. Syn. of trisignata trisignata Cockerell. 



*scitula antiochensis Timberlake. Calif. (Antioch, Oakley). On flowers of 

 Eriogonum, Gutierrezia, Heterotheca, and Lessingia. (Perdita) 

 Perdita scitula antiochensis Timberlake, 1960. Calif. Univ. Pubs. Ent. 

 17: 80, figs. 598, 599, 701. 9, $. 



^^scitula scitula Timberlake. Calif. (Inyo Co.). On flowers of Chrysothamnus 

 nauseosus. (Perdita) 

 Perdita scitula scitula Timberlake, 1960. Calif. Univ. Pubs. Ent. 17: 79. 

 9, $. 



*scotti Timberlake. Calif. (Kern Co.). (Perdita) 



Perdita scotti Timberlake, 1958. Calif. Univ. Pubs. Ent. 14: 338, figs. 

 412, 413, 490. 9, $. 



^scutellaris Timberlake. Southern Calif. On flowers of Coldenia and Erie- 

 gonum. (Heteroperdita) 

 Perdita scutellaris Timberlake, 1962, Calif. Univ. Pubs. Ent. 28: 89, figs. 

 829, 830, 893, text fig. B. 9, $. 



semicrocea Cockerell. Ariz. (Perdita) 



Taxonomy: Timberlake, 1962, loc. cit. supra, p. 35, figs. 761, 762, 859. 9, 



$. 



*semilutea Timberlake. Calif. (Riverside Co.). On flowers of Eriogonum 

 thomasii. (Perdita) 

 Perdita semilutea Timberlake, 1962. Calif. Univ. Pubs. Ent. 28: 81, figs. 

 819,820,888. $. 



