2196 Hymenoptera in America North of Mexico 



Taxonomy: Stephen, 1957. Oreg. Agr. Expt. Sta. Tech. Bui. 40: 44-49, 61, fig. 10, map 5 

 (redescriptions, as nevadensis nevadensis, n. miguelensis, crotchii semisnffiisus). 

 —Mitchell, 1962. N. C. Agr. Expt. Sta. Tech. Bui. 152: 521-523, figs. 129, 130, table 18 

 (redescription). — Milliron, 1971. Ent. Soc. Canada, Mem. 82: 73-77, pi. XI, map 5 

 (synonymy, redescription, geogr. and floral records). 



Genus BOMBUS Subgenus SEPARATOBOMBUS Prison 



Bremus subg. Separatobombus Prison, 1927. Amer. Ent. Soc, Trans. 53: 64. 



Type-species: Apis griseocollis Degeer. Orig. desig. (=Bombiis separatus Cresson). 



This subgenus is endemic in North America. 



griseocollis (Degeer). Que. south to Fla., west to B. C, Wash., Oreg. and north. Calif. 

 Apis griseocollis Degeer, 1773. Mem. Serv. Hist. Insectes, v. 3, p. 576. 

 (Dvirginica Olivier, 1789. Encycl. Meth., v. 4, p. 66. 

 {'!)virginica Pabricius, 1793. Ent. System., v. 2, p. 318. 

 CDvirginicHs Pabricius, 1804. Systema Piezatorum, p. 346. 

 Bombits sepai-atus Cresson, 1863. Ent. Soc. Phila., Proc. 2: 165. 9, 6, 5- 

 Bombus mormonorum Pranklin, 1911. Amer. Ent. Soc, Trans. 37: 161. 9, 6, 5. 

 Bremus separatus var. nero Bequaert and Plath, 1925. Mus. Compar. Zool., Bui. 67: 275. 5. 



Taxonomy: Stephen, 1957. Oreg. Agr. Expt. Tech. Bui. 40: 50-54, fig. 13, map 6 (synonymy, 

 redescription, geogr. records). —Mitchell, 1962. N. C. Agr. Expt. Sta. Tech. Bui. 152: 

 527-529, figs. 129, 132, table 18 (synonymy, redescription, geogr. range and floral records). 

 — Milliron, 1973. Ent. Soc Canada, Mem. 91: 247-252, pi. XVI, fig. 37 (synonymy, 

 redescription, geogr. and floral records). 



Biology: Plath, 1927. Psyche 34: 125-127 (life history, as separatus). —Plath, 1927. Ent. Soc 

 Amer., Ann. 20: 190 (hibernation, as separatus). —Plath, 1934. Bumblebees and their 

 ways, p. 155 (life history, as separatus). — Eshelman and Plowright, 1972. Canad. Ent. 

 104: 389-398 (nest entrance recognition). 



Morphology: Stephen and Koontz, 1973. Melanderia 13: 13-29, 50 figs, (developmental 

 changes in preadult stages). 

 morrisoni Cresson. B. C. to Calif., east to S. Dak., Nebr., Colo, and N. Mex. Parasite: 

 Monodontomerus luontivagus Ashm. 

 Bovibus morrisoni Cresson, 1878. Acad. Nat. Sci. Phila., Proc. p. 183. 9, S, 5. 

 Bombus morrisoni var. umbrosus Priese, 1931. Konowia 10: 301. 



Taxonomy: Stephen, 1957. Oreg. Agr. Expt. Sta. Tech. Bui. 40: 54-57, fig. 12, map 6 

 (redescription, geogr. records). —Milliron, 1973. Ent. Soc. Canada, Mem. 91: 252-256, pi. 

 XVI, map 38 (synonymy, redescription, geogr. and floral records). 



Biology: Bohart and Knowlton, 1952. Econ. Ent., Jour. 45: 890-891 (yearly population 

 fluctuations). 



Genus BOMBUS Subgenus CROTCHIIBOMBUS Franklin 



Bombus subg. C rotchiibombus Franklin, 1954. Amer. Ent. Soc, Trans. 80: 51. 

 Type-species: Bombus crotchii Cresson. Orig. desig. 



Endemic in western North America. 



crotchii Cresson. Calif.; Mexico (Baja California). 



Bombus crotchii Cresson, 1878. Acad. Nat. Sci. Phila., Proc p. 184. 9. 



Bombus nigrocinctus Provancher, 1888. Addit. Corr. Faune Ent. Canada, Hym., p. 342. 9. 



Bremus crotchii var. nigricaudus Prison, 1927. Calif. Acad. Sci., Proc. (4) 16: 375. 9. 



Taxonomy: Stephen, 1957. Oreg. Agr. Expt. Sta. Tech. Bui. 40: 57-61, fig. 15, map 7 

 (synonymy, redescription, geogr. records). —Milliron, 1973. Ent. Soc. Canada, Mem. 91: 

 256-258, pi. XVI, map 39 (synonymy, redescription, geogr. records). 



Genus BOMBUS Subgenus CULLUMANOBOMBUS Vogt 



Bombus subg. Cullumanobombus Vogt, 1911. Gesell. Naturf. Freunde, Sitzber. p. 57. 



I 



