1874 Hymenoptera in America North of Mexico 



Taxonomy: Timberlake, 1956. Calif. Univ. Pubs. Ent. 11: 273, 274, 275, figs. 219, 220, 310 (key, 

 genitalia). -Timberlake, 1958. Calif. Univ. Pubs. Ent. 14: 393 (key). -Mitchell, 1960. N. C. 

 Agr. Expt. Sta. Tech. Bui. 141: 312-313, figs. 72-73, table 9 (redescription). 

 obscurata Cresson. N. C. to Tex. Parasite: Neolarra cockerelli (Cwfd.)? Pollen: Unknown, but 

 visits flowers of Batodendron, Diospyros virginiana, Stillmgia sylvatica. 

 Perdita obscurata Cresson, 1878. Amer. Ent. Soc, Trans. 7: 70. 9, d. 

 Perdita Carolina Timberlake, 1952. Ent. Soc. Wash., Proc. 54: 199. 9,6. 



Taxonomy: Timberlake, 1956. Calif. Univ. Pubs. Ent. 11: 273, 274, figs. 215, 216, 308 (key, 

 genitalia, geogr. and floral records, as Carolina). —Timberlake, 1960. Calif. Univ. Pubs. 

 Ent. 17: 134 (synonymy). —Mitchell, 1960. N. C. Agr. Expt. Sta. Tech. Bui. 141: 313-314, 

 figs. 72-74, 79, table 9 (synonymy, redescription). 



townesi Timberlake. N. C. to Fla. Pollen: Unknown, but visits flowers of Batodendron, 

 Ceanothus niicrophyllus, Diospyros virginiana. Ilex, Nyssa sylvatica. 

 Perdita townesi Timberlake, 1968. Calif. Univ. Pubs. Ent. 49: 31, figs. 1209-1210, 1308. 6, 



9. 



Genus PERDITA Subgenus COCKERELLIA Ashmead 



Cockerellia Ashmead, 1898. Psyche 8: 284. 



Type-species: Perdita albipennis Cresson. Monotypic and orig. desig. 

 (=Perdita hyalina Cresson). 

 Philoxanthus Ashmead, 1898. Psyche 8: 285. 



Type-species: Perdita beata Cockerell. Monotypic and orig. desig. 



The species of this subgenus are found almost exclusively at flowers of Compositae, mostly of 

 the genera Baileya, Coreopsis, Gaillardia, Geraea, Helianthus, Ratibida, Rudbeckia and Ver- 

 besina, but also occur at the flowers oi Erigeron, Heterotheca, Pedis and Prionopsis. 



Taxonomy: Timberlake, 1953. Kans. Univ. Sci. Bui. 35: 971-974 (key to females of included 

 spp.). —Timberlake, 1954. Calif. Univ. Pubs. Ent. 9: 347, 385-402 (key to included spp.). 

 —Timberlake, 1956. Calif. Univ. Pubs. Ent. 11: 326. —Timberlake, 1958. Calif. Univ. Pubs. 

 Ent. 14: 382-383. -Timberlake, 1968. Calif. Univ. Pubs. Ent. 49: 19-22 (modification of 

 key). —Timberlake, 1971. Calif. Univ. Pubs. Ent. 66: 2-5 (key to spp. allied to hilaris). 

 albihirta albihirta Timberlake. South. Calif. (Colorado Desert). Pollen: Apparently an 



oligolege of Geraea canescens, but visits the flowers of Encelia farinosa and Melilotus 



presumably for nectar. 

 Perdita albihirta albihirta Timberlake, 1954. Calif. Univ. Pubs. Ent. 9: 395, fig. 79. 9, 6. 

 albihirta geraeae Timberlake. Calif. (Colorado and Mojave Deserts), Nev. (Statehne). Pollen: 



Apparently an oligolege of Geraea canescens, but visits the flowers of Acamptopappus 



sphaerocephaius var. hirtellus and Larrea tridentata presumably for nectar. 

 Perdita albihirta geraeae Timberlake, 1954. Calif. Univ. Pubs. Ent. 9: 396. 9,6. 

 albipennis albipennis Cresson. N. Dak. south to Tex., west to Wyo., Colo, and Ariz. Pollen: 



Unknown, but visits flowers of Helianthus annuus, H. petiolaris, Hymenopappus, 



Nolina, Prionopsis ciliata. Predator: Philanthus ventilabris Fabr. 

 PerditaC.) albipennis Cresson, 1868. Amer. Ent. Soc, Trans. 1: 386. 9. 

 Perdita hyalina Cresson, 1878. Amer. Ent. Soc, Trans. 7: 68. 6. 

 Perdita albipennis var. helianthi Cockerell, 1896. Acad. Nat. Sci. Phila., Proc 48: 104. 6, 



9. 

 Perdita albipennis var. helianthi mut. pasonis Cockerell, 1896. Acad. Nat. Sci. Phila., Proc. 



48: 105. <J. 

 Perdita lacteipennis Swenk and Cockerell, 1907. Ent. News 18: 51. 9, 6. 



Taxonomy: Cockerell, 1899. Psyche 8: 419. 6 (as hyalina). —Cockerell, 1899. Psyche 8: 419. 

 6 (as pasonis). —Timberlake, 1953. Kans. Univ. Sci. Bui. 35: 977-978 (geogr. and floral 

 records, as lacteipennis lacteipennis). —Timberlake, 1954. Calif. Univ. Pubs. Ent. 9: 388, 

 390, 391, 398, 400 (geogr. and floral records, in part, as albipennis, lacteipennis 

 lacteipennis, pasonis and hyalina). —Timberlake, 1960. Calif. Univ. Pubs. Ent. 17: 130-131 

 (types, synonymy, status discussed). —Timberlake, 1968. Calif. Univ. Pubs. Ent. 49: 20 

 (synonymy, status discussed). 



