1826 Hymenoptera in America North of Mexico 



sladeni Viereck. B. C. to Wyo. and Nev. Pollen: Unknown, but visits flowers of Taraxacum 



officinale. 

 Andrena (Andrena) sladeni Viereck, 1924. Canad. Ent. 56: 239. 9 . 



Taxonomy: Cockerell, 1932. Canad. Ent. 64: 286 (key). — Ribble, 1974. Amer. Ent. See, Trans. 

 100: 155-158, figs. 1, 4, 70-74 (redescription). 

 tildeni Ribble. Calif., Ariz. Pollen: Unknown, but visits flowers of Cryptantha intermedia, 

 Salix argophylla, S. exigiia. 

 Andrena (Scaphandrena) tildeni Ribble, 1974. Amer. Ent. Soc, Trans. 100: 139, figs. 1, 3, 

 49-53. 6. 

 trapezoidea Viereck. Tex., Okla. Pollen: Unknown, but visits flowers of Descourainia pinnata, 

 Lesquerella derisiflora, L. gordonii, L. gracilis, L. recurvata, Rhus microphylla. 

 Andrena (Scrapter) trapezoidea Viereck, 1917. Amer. Ent. Soc, Trans. 43: 402. 9. 



Taxonomy: Ribble, 1968. Nebr. Univ. State Mus., Bui. 8: 328-332, figs. 85-87, map 10, table 11 

 (redescription). —Ribble, 1974. Amer. Ent. Soc, Trans. 100: 104, fig. 1 (subgeneric 

 position). 

 vestali Cockerell. Colo., Nebr. Pollen: Unknown, but visits flowers of Viola. 

 Andrena vestali Cockerell, 1913. Ann. and Mag. Nat. Hist. (8) 11: 64. S. 

 Andrena vestali var. dolichocera Viereck and Cockerell, 1914. U. S. Natl. Mus., Proc. 48: 

 19. d. 



Taxonomy: Lanham, 1941. Ent. Soc. Amer., Ann. 34: 707. 6 (key). —Ribble, 1974. Amer. Ent. 

 Soc, Trans. 100: 170-172, figs. 1, 8, 95-99 (redescription). 

 walleyi Cockerell. B. C. to Calif. (Alpine Co.), east to Idaho and Utah. Pollen: Unknown, but 

 visits flowers of Cardaria draba. 

 Andrena walleyi Cockerell, 1932. Canad. Ent. 64: 286. 9. 



Taxonomy: Ribble, 1974. Amer. Ent. Soc, Trans. 100: 158, figs. 1, 5, 75-79 (redescription). 

 Genus ANDRENA Subgenus SCOLIANDRENA Lanham 



Andrena subg. Scoliandrena Lanham, 1949. Calif. Univ. Pubs. Ent. 8: 223. 



Type-species: Andrena osmioides Cockerell. Monotypic and orig. desig. 



The species of this subgenus chiefly visit the flowers of Cryptantha upon which the females 

 are apparently solely dependent for pollen. 



Taxonomy: LaBerge, 1964. Nebr. Univ. State Mus., Bui. 4: 283, 291, 313 (tax. characters). 

 cryptanthae Timberlake. South. Calif. Pollen: Oligolege of Cryptantha including C. barbigera, 

 C. intermedia, but visits other flowers for nectar. 

 Andrena (Scoliandrena) cryptanthae Timberlake, 1951. U. S. Natl. Mus. Proc. 101: 401. 9, 

 6. 

 osmioides benitonis Lanham. North. Calif. Pollen: Oligolege of Cryptantha. 



Andrena osmioides benitonis Lanham, 1949. Pan-Pacific Ent. 25: 148. 9, <?. 

 osmioides osmioides Cockerell. South. Calif. Pollen: Oligolege of Cryptantha including C. 



intermedia, but visits other flowers for nectar including Plagiobothrys califomica, P. 

 nothofulvus. 

 Andrena osmioides Cockerell, 1916. Pomona Jour. Ent. Zool. 8: 45. 6 . 



Genus ANDRENA Subgenus SCRAPTEROPSIS Viereck 



Atidrena subg. Scrapteropsis Viereck, 1922. Boston Soc. Nat. Hist., Occas. Papers 5: 42. 



Type-species: Andrena (Scrapteropsis) fenningeri Viereck. Monotypic. 

 Andrena subg. Mimandrena Lanham, 1949. Calif. Univ. Pubs. Ent. 8: 217. 



Type-species: Andrena imitatrix Cresson. Orig. desig. 



Revision: LaBerge, 1971. Amer. Ent. Soc, Trans. 97: 441-504, figs. 1-53, 1 table (N. Amer. 

 spp.). 



Taxonomy: Warneke, 1968. Coimbra Univ. Est. Mus. Zool, Mem. 307: 68-69 (synonymy). 

 —LaBerge, 1973. Amer. Ent. Soc, Trans. 99: 235, 237-240 (phylogeny, tax. status). 



