Two new subgenera of North American bees. American Museum novitates ; no. 47

Cockerell, Theodore D. A. (Theodore Dru Alison), 1866-1948.Lutz, Frank Eugene, 1879-1943.2005-10-062005-10-061922http://hdl.handle.net/2246/32545 p. : ill. ; 24 cm.509123 bytesapplication/pdfen-USQL1 .A436 no.47, 1922LutziellaPerdita (Lutziella) opuntiaePachycerapisExomalopsis (Pachycerapis) cornigeraExomalopsis -- Geographical distribution.Bees -- Colorado -- Boulder RegionBees -- Southwestern States -- Geographical distribution.Insects -- Colorado -- Boulder RegionInsects -- Southwestern States -- Geographical distribution.Two new subgenera of North American bees. American Museum novitates ; no. 47New subgenera of beestext