Superfamily APOIDEA 2115 



pasitura (Cockerell). Tex. Host: Exomalopsis compactula (Ckll.)? 



No7nada pasihira Cockerell, 1935. Amer. Mus. Novitates 766: 6. 6. 

 penniger (Cockerell). N. Mex. 



Nomada penniger Cockerell, 1894. Ent. News 5: 235. 9. 

 timberlakei Linsley. Calif. 



Triopasites timberlakei Linsley, 1939. Pan-Pacific Ent. 15: 9. 9. 



Genus MELANOMADA Cockerell 



Melanomada Cockerell, 1903. Acad. Nat. Sci. Phila., Proc. 55: 587. 



Type-species: Nomada grindeliae Cockerell. Monotypic and orig. desig. 

 grindeliae (Cockerell). Nebr., Mont. 



Nomada grindeliae Cockerell, 1903. Ann. and Mag. Nat. Hist. (7) 12: 210. 6. 

 heleniella (Cockerell). Tex., Nebr., Kans. 



Nomada (Melanomada) heleniella Cockerell, 1911. U. S. Natl. Mus., Proc. 39: 648. 9,3. 

 sidaefloris (Cockerell). N. Mex. 



Nomada pennigera var. sidaefloris Cockerell, 1898. N. Mex. Univ., Bui. 1: 59. <J. 



Subfamily ANTHOPHORINAE 



This is a large assemblage of both pollen-collecting and parasitic bees. It is found on all the 

 continents although it is especially well represented in the Holarctic, Ethiopian and Neotropical 

 regions. The current classification recognizes about a dozen tribes of which seven are 

 represented in America north of Mexico. Insofar as known, all of the pollen-collecting species 

 line their cells with a waxlike substance. 



Tribe EXOMALOPSINI 



This tribe consists of several American genera which are chiefly or entirely Neotropical in oc- 

 currence. Only the genera Ancyloscelis and Exomalopsis extend northward into the United 

 States. Close relatives of the Exomalopsini include two tribes, the Ancylini (Ancyla and Tar- 

 salia) which inhabit the more arid areas of the Palaearctic and the Tetrapediini (Tetrapedia) 

 which live in the tropics of the Neotropical Region. While most of the studied Exomalopsini nest 

 in the ground and are colonial, if not communal, at least some species of the genus 

 Paratetrapedia, like the Tetrapediini, make their nests in wood. 



Taxonomy: Michener and Moure, 1957. Amer. Mus. Nat. Hist., Bui. 112: 395-452, 91 figs, 

 (generic classification). 



Biology: Torchio, 1974. Kans. Ent. Soc, Jour. 47: 54-63, 21 tables (nest architecture, 

 comparative behavior). 



Genus EXOMALOPSIS Spinola 



Although primarily a genus of Neotropical bees, there are several subgenera represented in 

 America north of Mexico, especially in the more arid areas of the southwestern United States. 

 The species of Paranomada, Hesperonomada and Triopasites may be cleptoparasitic in the 

 nests of these bees. 



Revision: Timberlake, 1947. N. Y. Ent. Soc, Jour. 55: 85-106. -Mitchell, 1962. N. C. Agr. 

 Expt. Sta. Tech. Bui. 152: 235-240, figs. 68-69 (eastern U. S. spp.). 



Genus EXOMALOPSIS Subgenus EXOMALOPSIS Spinola 



Exomalopsis Spinola, 1853. Accad. Sci. Torino, Mem. (2) 13: 89. 



Type-species: Exomalopsis aureopilosa Spinola. Desig. by Taschenberg, 1883. 

 (=Exonialopsis fulvopilosa Spinola). 

 iEpimonispractor Holmberg, 1903. Buenos Aires Mus. Nac. de Hist. Nat., An. (3) 2: 426. 

 Type-species: Epimonispractor gratiosus Holmberg. Orig. desig. 

 birkmanni Cockerell. Tex. Pollen: Unknown, but visits flowers of Antigonon leptopus. 

 Exomalopsis birkmanni Cockerell, 1922. Ann. and Mag. Nat. Hist. (9) 10: 265. 9. 



