2206 Hymenoptera in America North of Mexico 



of spp. in America north of Mexico). — Milliron, 1961. Kans. Ent. Soc, Jour. 34: 59-60 

 (subgeneric synonymy). — Medler, 1962. Canad. Ent. 94: 444-447, 1 fig., 3 tables 

 (morphometric study). -Mitchell, 1962. N. C. Agr. Expt. Sta. Tech. Bui. 152: 538-544, fig. 

 134, table 18 (east. U. S. spp.). 



Biology: Sladen, 1899. Ent. Monthly Mag. 35: 230-234 (habits, host). — Sladen, 1915. Canad. 

 Ent. 47: 84 (habits, host). -Frison, 1921. Canad. Ent. 53: 100-101 (hosts). Plath, 1922. Biol. 

 Bui. 43: 23-44, pi. I (life history, hosts). Frison, 1926. Ent. Soc. Amer., Ann. 19: 205-221, pi. 

 XVII, fig. 3b (life history, hosts). 



—Plath, 1927. Brooklyn Ent. Soc, 22: 121-125 (life history, enemy of Apis mellifera). 

 —Plath, 1934. Bumblebees and their ways, 201 pp.. New York, Macmillan (life history, 

 hosts). 

 ashtoni (Cresson). P. E. I. west to Sask., south to N. Dak., Minn., Wis., Mich., Ohio, W. Va. and 

 Va. Host: Bovibus ajfinis Sm., B. terricola Kby. 

 Apathus ashtoni Cresson, 1864. Ent. Soc. Phila., Proc. 3: 42. 9. 



Taxonomy: Mitchell, 1962. N. C. Agr. Expt. Sta. Tech. Bui. 152: 539-540, table 18 

 (redescription). 



Biology: Plath, 1922. Psyche, 29: 191 (hibernation, hosts). —Plath, 1934. Bumblebees and 



their ways, p. 169 (habits, hosts). 

 citrinus (Smith). P. E. I. and N. B., south to Fla. and Ala., west to S. Dak. and N. Dak. Host: 

 Bombus impatieyis (Cr.), B. nevadensis auricomus (Robt.), B. vagans (Sm.); also 

 occasionally attempts to invade hives of ^4 pi's mellifera Linn. For years Psithynis 

 laboriosus (Fabricius) was considered to be the correct name for this species; however, 

 an examination of the type specimen (see Mitchell, 1962. N. C. Agr. Expt. Sta. Tech. Bui. 

 152: 333) has demonstrated that laboriosus is a member of the genus Emphoropsis in 

 the Anthophoridae. 



Apathus citrinus Smith, 1854. Cat. Hym. Brit. Mus., v. 2, p. 385. 6. 



Apathus contiguus Cresson, 1863. Ent. Soc. Phila., Proc. 2: 112. i. 



Taxonomy: Mitchell, 1962. N. C. Agr. Expt. Sta. Tech. Bui. 152: 540-541, table 18 

 (redescription). 



Biology: Frison, 1921. Canad. Ent. 53: 100-101 (habits, hosts, as laboriosus). — Bequaert and 

 Plath, 1925. Mus. Compar. Zool., Bui. 67: 268-272 (life history, host, as laboriosus). 

 —Plath, 1927. Ent. Soc. Amer., Ann. 20: 191 (hibernation, as laboriosiis). —Plath, 1927. 

 Brooklyn Ent. Soc, Bui. 29: 121-125 (inquiline in hives of Apis mellifera Linn.). —Plath, 

 1934. Bumblebees and their ways, p. 175 (hosts, habits). 

 femaldae Franklin. Alaska and Canada, south to N. C. and Tenn. in east. U. S. and Colo, and 



Calif, in west. U. S. Host: Bombus appositus Cress., B. perplexus Cress.?, B. rufocinctus 



Cress., B. terricola occidentalis Greene. 

 Psithyrus femaldae Franklin, 1911. Amer. Ent. Soc, Trans. 37: 164. 9. 

 Psithyrus tricolor Franklin, 1911. Amer. Ent. Soc, Trans. 37: 167. S. 

 Psithyrus wheeleri Bequaert and Plath, 1925. Mus. Compar. Zool., Bui. 67: 265. 9,6. 



Taxonomy: Frison, 1923. Amer. Ent. Soc, Trans. 48: 321 (synonymy). —Frison, 1926. Amer. 

 Ent. Soc, Trans. 52: 145 (tax. status of wheeleri). —Mitchell, 1962. N. C. Agr. Expt. Sta. 

 Tech. Bui. 152: 541-542, fig. 134, table 18 (redescription). 



Biology: Plath, 1927. Ent. Soc. Amer., Ann. 20: 191 (hibernation). —Plath, 1934. Bumblebees 

 and their ways, p. 171 (habits, hosts). 



Morphology: Milliron, 1961. Brooklyn Ent. Soc, Bui. 55: 109-113, 2 figs, (gynandromorph). 

 insularis (Smith). Canada, south to Calif., Ariz. (Oak Creek Canyon), N. Mex., Nebr. (Sioux 

 County), N. Y. (Ithaca) and N. H. (Durham), ?Alaska (Berg Bay). Host: Bombus 

 appositus Cress., B. bifarius nearcticus Handlirsch, B. califomicus Sm., B.flavifrons 

 Cress., B. nevadensis nevadensis Cress., B. pennsylvanicus (DeG.), B. rufociyictus 

 Cress., B. temarius Say, B. terricola occidentalis Greene, B. t. terricola Kby. 

 Bombus intemiptus Greene, 1858. Lye Nat. Hist. N. Y., Ann. 7: 11. 9. Preocc. 

 Apathus insularis Smith, 1861. Jour, of Ent. 1: 155. 9. 



