378 Hymenoptera in America North of Mexico 



austelli Mason. Mass. s. to N. C. 



Exyston {Anecphysis) austelli Mason, 1959. Canad. Jour. Zool. 37: 1078. 6,9. 

 boreotis Davis. N. Y., Mich., Sask., Wyo., Colo., N. Mex., Alta. 



Exyston boreotis Davis, 1897. Amer. Ent. Soc, Trans. 24: 238. 6 . 

 Exyston nigro scutum Davis, 1897. Amer. Ent. Soc, Trans. 24: 237. 6. 

 Exyston contracta Davis, 1897. Amer. Ent. Soc, Trans. 24: 238. 6. Uncertain syn.; Mason 

 (1959) suggested that contracta might alternatively prove to be a senior synonym of 

 spinulosiim Mason. 



Taxonomy: Mason, 1959. Canad. Jour. Zool. 37: 1082-1084, 1112-1113. — Townes, 1969. Amer. 



Ent. Inst, Mem. 11: 186. 

 californicum Mason. Alta. s. to Colo., w. to Alaska and Calif. 



Exyston (Anecphysis) califomicus Mason, 1959. Canad. Jour. Zool. 37: 1093. 6,9. 

 chamaeleon Mason. Ont., N. W. T. w. to Yukon, s. to S. Dak., N. Mex. and Calif. 



Exyston (Exyston) chamaeleon Mason, 1959. Canad. Jour. Zool. 37: 1099. 6,9. 

 clavatum (Cresson). N. S. w. to B. C, s. to Va., Ill, Kans., and Calif. 



Cteniscus clavatus Cresson, 1864. Ent. Soc. Phila., Proc. 3: 284. 6. 



Cteniscus abdominalis Cresson, 1865. Ent. Soc. Phila., Proc. 4: 264. 9. 



Exyston abdominalis Ashmead, 1896. Amer. Ent. Soc, Trans. 23: 197. 6. Preocc. by above 

 synonym, abdominalis Cresson, 1865. 



Rhimphalea erythrogaster Viereck, 1917 (1916). Conn. State Geol. and Nat. Hist. Survey 

 Bui. 22:296. 9. 

 excelsum (Cresson). Wyo., Colo. 



Cteniscus excelsus Cresson, 1865. Ent. Soc. PhUa., Proc. 4: 262. 9. 

 flavens Davis. Mass., N. J., Ga., Tex. 



Exyston flavens Davis, 1897. Amer. Ent. Soc, Trans. 24: 237. 9. 

 hadrum Mason. Mich., Minn., Sask., Colo., Alta. 



Exyston (Anecphysis) hadros Mason, 1959. Canad. Jour. Zool. 37: 1080. 6,9. 

 humerale Davis. Newfoundland (insular) w. to Sask., s. to Minn., Kans., and Mont. 



Exyston humeralis Davis, 1897. Amer. Ent. Soc, Trans. 24: 239. 6. 



Exyston articulatus Davis, 1897. Amer. Ent. Soc, Trans. 24: 239. 6. 

 Illinois Mason. Que., Ont, Mich., 111., Iowa. 



Exystoyi (Exyston) illinois Mason, 1959. Canad. Jour. Zool. 37: 1103. cj, 9. 



lophotum Mason. N. W. T., Sask., Alta., B. C, Wash., Calif. 



Exyston (Anecphysis) lophotos Mason, 1959. Canad. Jour. Zool. 37: 1091. 6,9. 

 maculosum (Provancher). N. S. w. to B. C, s. to N. C, III, Ariz., and Calif. Host: Pristiphora 

 bivattata (Nort.), P. citicta Newman, P. sycophanta Walsh. 



Mesoleptus maculosus Provancher, 1875. Nat. Canad. 7: 114. "9" = 6. 



Exyston (Anecphysis) tectiis Mason, 1959. Canad. Jour. Zool. 37: 1073. 6,9. 



Taxonomy: Barron, 1975. Nat. Canad. 102: 502 (syn.). 

 marginatum (Provancher). Northern Que. w. to Alaska, s. to N. C, Mich., Colo., and Calif. 



Exystoyi marginatum Provancher, 1886. Addit. Corr. Faune Ent. Canada Hym., p. 99. 9. 



Anecphysis curvineura Davis, 1897. Amer. Ent. Soc, Trans. 24: 234. 9. 



Exyston nigreo Davis, 1897. Amer. Ent. Soc, Trans. 24: 236. 6. 

 politum Davis. Mont., Wyo., Calif. 



Exyston politus Davis, 1897. Amer. Ent Soc, Trans. 24: 240. 9. 

 reniforme Mason. Colo., Alta., B. C, Oreg., Calif. 



Exyston (Anecphysis) reniformis Mason, 1959. Canad. Jour. Zool. 37: 1089. 6,9. 

 speciosum Davis. Alta. s. to Colo., w. to B. C. and Calif. 



Exyston speciosus Davis, 1897. Amer. Ent. Soc, Trans. 24: 237. 6. 

 spinulosum Mason. N. W. T. w. to Alaska, s. to Iowa, Kans., Wyo., and Wash.; Kamchatka. 



Exyston (Anecphysis) spinulosus Mason, 1959. Canad. Jour. Zool. 37: 1086. 6,9. 

 variatum Provancher. N. S. w. to B. C, s. to N. C, 111., and N. Dak. Ecology: Occurs at forest 

 edges and along woodland paths, but not in grasslands or meadows. 



Exyston variatus Provancher, 1877. Nat Canad. 9: 15. 9. 



