Superfamily APOIDEA 2063 



tridentata, Melilotus, Oenothera deltoides, Palafoxia linearis, Sphaeralcea ambigiia, S. 



emoryi, S. rosacea. 

 Megachile xerophila Cockerell, 1933. Pan-Pacific Ent. 9: 27. 9. 

 yumensis Mitchell. Ariz. (Wickenburg). 



Megachile (Derotropis) yumensis Mitchell, 1944. Pan-Pacific Ent. 20: 141. 9. 



Genus MEGACHILE Subgenus XEROMEGACHILE Mitchell 



Megachile subg. Xeromegachile Mitchell, 1934. Amer. Ent. Soc, Trans. 59: 302, 309. 

 Type-species: Megachile Integra Cresson. Orig. desig. 

 alata Mitchell. South, and east. Calif., Ariz.; Mexico (Baja California). Pollen: Unknown, but 

 visits principally flowers of the Compositae including Bebbia juncea, Chrysothamnus, 

 Encelia californica, E.farinosa, Eschscholzia, Helianthus gracilentus, Prosopis, 

 Viguiera parishii. 

 Megachile (Xeromegachile) alata Mitchell, 1934. Amer. Ent. Soc, Trans. 59: 324. i. 

 Megachile (Xeromegachile) redlandica Mitchell, 1934. Amer. Ent. Soc, Trans. 59: 331. 9. 

 boharti Mitchell. South. Calif., Ariz.; Mexico (Sonora). Pollen: Unknown, but visits flowers of 

 Cercidium, Prosopis. 

 Megachile (Xeromegachile) boharti Mitchell, 1942. Pan-Pacific Ent. 18: 74. 9. 



bradleyi Mitchell. Utah, Nev., Calif. (Antioch). 



Megachile (Xeromegachile) bradleyi Mitchell, 1934. Amer. Ent. Soc, Trans. 59: 340. 9. 

 brimleyi Mitchell. N. C, Fla. Pollen: Unknown, visits principally flowers of Galactia, but has 

 also been found at flowers of Erigeron volubilis. 

 Megachile brimleyi Mitchell, 1926. Amer. Ent. Soc, Trans. 52: 114. 6. 

 bruneri Mitchell. Colo., east. Calif.; Mexico (Baja California). Pollen: Unknown, but visits 

 flowers of Chrysothantnus. 

 Megachile (Xeromegachile) bruneri Mitchell, 1934. Amer. Ent. Soc, Trans. 59: 328. 6. 

 casadae Cockerell. S. Dak., Nebr., Okla., Tex., Wyo., Colo., N. Mex., Utah, Calif., Ariz. Pollen: 

 Unknown, but visits flowers of Helianthus, Opuntia, Populus. 

 Megachile casadae Cockerell, 1898. Ann. and Mag. Nat. Hist. (7) 1: 127. 6. 

 Megachile populi Cockerell, 1900. Ann. and Mag. Nat. Hist. (7) 6: 17. 9. 

 Megachile opuiitiarmn Cockerell, 1906. Ann. and Mag. Nat. Hist. (7) 17: 229. 9. 

 Megachile anstinensis Mitchell, 1927. Psyche 34: 105. 9. 



coloradensis Mitchell. Colo. 



Megachile (Xeromegachile) colorade^isis Mitchell, 1936. Amer. Ent. Soc, Trans. 62: 379. 9. 

 dakotensis Mitchell. Minn., Iowa, 111., Mont., N. Dak., S. Dak., Nebr., Tex. Pollen: Unknown, but 

 visits flowers of Amorpha canescens, Cleome serrulata, Helianthus, Kuhnistera 

 Candida, K. oligophylla, Petalostemon violaceus. Verbena. 

 Megachile dakotensis Mitchell, 1926. Psyche 33: 164. 6,9. 

 deflexa Cresson. N. C, Fla., Nebr., Kans., Okla., Tex. Pollen: Unknown, but^visits flowers of 

 Bidens, Clethra, Coreopsis, Erigeron, Gaillardia amblydon, Geobanu's pallidus, 

 Petalostemon, Phaseolus, Rubus, Strophostyles. 

 Megachile deflexa Cresson, 1878. Amer. Ent. Soc, Trans. 7: 125. 6. 

 Megachile megagyna Cockerell, 1909. Canad. Ent. 41: 394. 9. 

 Megachile indianorum Cockerell, 1913. Ann. and Mag. Nat. Hist. (8) 11: 533. 6. 

 Megachile (Xeromegachile) coreopsana Mitchell, 1934. Amer. Ent. Soc, Trans. 59: 319. 6. 



dulciana Mitchell. South. Calif. 



Megachile (Xeromegachile) dulciana Mitchell, 1934. Amer. Ent. Soc, Trans. 59: 343. 9. 

 fucata Mitchell. Colo., N. Mex., Utah, Ariz., Calif., deserts. Pollen: Possibly polylectic, is known 

 to collect pollen from Larrea tridentata, but visits other flowers including Argemo7ie 

 platyceros. Aster abatus, A. tortifolius, Baileya, Cercidium, Encelia fndescens, 

 Palafoxia li7iearis, Prosopis, Senecio douglasii var. longilobus. 

 Megachile (Xeromegachile) fucata Mitchell, 1934. Amer. Ent. Soc, Trans. 59: 323. 6. 

 Megachile (Xeromegachile) histrata Mitchell, 1934. Amer. Ent. Soc, Trans. 59: 334. 9. 



Biology: Hurd and Linsley, 1975. Smithsn. Contrib. Zool. 193: 38 (floral relationships). 



