440 HYMENOPTERA OF AMERICA NORTH OF MEXICO 



*crassula Timberlake. N. Hex. (LasCruces). (Epimacrotera) 



Perdita crassula Timberlake, 1958. Calif. Univ. Pubs. Ent. 14: 381, figs. 



462,463, 516. $. 

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



*croceipes Timberlake. Ariz. (Yavapai Co.). On flowers of Gutierrezia mi- 

 crocephala. (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. $. 



crotonis crotonis Cockerell. N. Mex., Ariz.; Mexico (Chihuahua). (Perdita) 

 Taxonomy: Timberlake, 1960, loc. cit. supra, p. 44, figs. 558, 559, 681. 9, 

 $. 



*crotonis cucullata Timberlake. Calif. (Anza). On flowers of Croton calif or- 

 nicus. (Perdita) 

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



46. 9, $. 



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



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



48. 9, $. 



*crotonis dilucida Timberlake. Ariz., possibly Kans. and Nebr. On flowers of 

 Euphorbia. (Perdita) 

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



47. 9, $. 



*crotonis juabensis Timberlake. Utah (Juab Co.). On flowers of Croton tex- 

 ensis. (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. 9, $. 



*crotonis subnitens Timberlake. Kans. On flowers of Croton monantho- 

 gynus. (Perdita) 

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



48. 9. 



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



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

 9, $. 



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 Rov/ers ot Aplopappiis. (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 al- 

 bidus. (Perdita) 

 Perdita dicksoni Timberlake, 1958. Calif. Univ. Pubs. Ent. 14: 328, figs. 

 392, 393,480. 9, $. 



*dilecta Timberlake. Utah, Tex. (Perdita) 



Perdita dilecta Timberlake, 1960. Calif. Univ. Pubs. Ent. 17: 40, figs. 

 554,555,679. 9, $. 



