1958 Hymenoptera in America North of Mexico 



ripariellum (Cockerell). Colo. 



Halktus riparieUus Cockerell, 1918. Entomologist 51: 261. 9. 

 sisymbrii (Cockerell). Wyo. to N. Mex., west to B. C. and Calif.; Mexico (Baja California). 

 Predator: Philanthus ventilabris Fabr. 



Halktus sisymbrii Cockerell, 1895. Ann. and Mag. Nat. Hist. (6) 16: 63. 9. 



Taxonomy: Cockerell, 1897. Amer. Ent. Soc, Trans. 25: 165. 9,6. 



Biology: Linsley, 1962. Ent. Soc. Amer., Ann. 55: 159. — Alcock and Gamboa, 1975. Ariz. 



Acad. Sci. 10: 163 (predator). 

 titusi (Crawford). Oreg., Calif. 



Halictus Titusi Crawford, 1902. Canad. Ent. 34: 235. 9. 

 trizonatum (Cresson). Alta. to N. Mex., west to B. C. and Calif. 



Halictus trizonatus Cresson, 1874. Amer. Ent. Soc, Trans. 5: 101. 9. 



Halictiis egregius Vachal, 1904. Soc. Sci. Hist. Arch. Correze, Bui. 26: 476. 9. 



Halictus colatus Vachal, 1904. Soc. Sci. Hist. Arch. Correze, Bui. 26: 476. 6. 

 zonulum (Smith). Holarctic; N. S. to Minn., south to N. Y., Mich., Wis. Predator: Philanthtis 

 gibbosus (Fabr.). 



Halictus zonulus Smith, 1848. Zoologist 6: 2171. 9,6. 



Halictus cratenis Lovell, 1908. Psyche 15: 35. 9, 6. 



Biology: Brittain, 1933. Canad. Dept. Agr., Bui. (n. s.) 162: 94. — Knerer and Atwood, 1962. 

 Ent. Soc. Ontario, Proc. 92: 163. 



Genus EVYLAEUS Robertson 



Evylaeus Robertson, 1902. Canad. Ent. 34: 244. 



Type-species: Halictus arcuatus Robertson. Orig. desig. {=Halictus cinctipes 

 Provancher). 



Taxonomy: Mitchell, 1960. N. C. Agr. Expt. Sta. Tech. Bui. 141: 348-363, figs. 89-91 (eastern 

 U. S. spp.). 



Biology: Knerer and Plateaux, 1967. Acad. Sci. Paris, Compt. Rend. 265: 455-458 (nest 

 architecture). 

 abcrrans (Crawford). N. Dak., Nebr., Colo., N. Mex., Alta., Oreg., Calif., Utah. Parasite: 



Sphecodes sp. Pollen: Collects pollen principally from Oenothera, but also visits these 

 and a wide variety of other plants for nectar or occasionally pollen. Predator: 

 Philanthus gibbosus (Fabr.). 

 Halictus aberrans Crawford, 1903. Canad. Ent. 35: 336. 9. 

 Halictus galpinsiae Cockerell, 1903. Canad. Ent. 35: 342. 9. 

 Halictus gelidus Vachal, 1904. Soc. Sci. Hist. Arch. Correze, Bui. 26: 481. 6. 



Biology: Bohart and Youssef, 1977 (1976). Wasmann Jour. Biol. 34: 185-234, 18 figs., 4 tables 

 (nest architecture, life history, behavior, parasite, as galpiiisiae). 

 absurdiceps (Timberlake). Calif. (Central Valley). 



Halictus (Evylaeus) absurdiceps Timberlake, 1962. Ent. Soc. Wash., Proc. 62: 105. 6. 



allonotus (Cockerell). Calif. 



Halictus allonotus Cockerell, 1936. Pan-Pacific Ent. 12: 156. 9. 



amicus (Cockerell). N. Mex., Ariz., Calif. 



Halictus amicus Cockerell, 1897. Amer. Ent. Soc, Trans. 24: 164. 9. 



angustior (Cockerell). N. Mex., Ariz. 



Halictus angustior Cockerell, 1897. Amer. Ent. Soc, Trans. 24: 165, 167. 9,6. 



argemonis (Cockerell). Calif.; Mexico. 



Halictus arcuatus var. argemonis Cockerell, 1897. Amer. Ent. Soc, Trans. 24: 146. 9. 

 Halictus latifrons Crawford, 1907. Invertebrata Pacifica 1: 192. 9. 



Taxonomy: Michener, 1951. In Muesebeck, Krombein and Townes, U. S. Dept. Agr., Agr. 

 Monog. 2: 1107 (synonymy). 

 arizonensis (Crawford). Ariz., Calif.; Mexico (Baja California). 



Halictus arizonensis Crawford, 1907. N. Y. Ent. Soc, Jour. 15: 189. 9. 



