380 Hymenoptera in America North of Mexico 



Type-species: Diaborus pallitarsis Thomson. Orig. desig. The type-species is 

 regarded as a synonym of Cteniscus scalaris (Gravenhorst). 



The name Cteniscus has not traditionally applied to this genus, the change in application being 

 made by Townes, Townes, and Gupta (1965) in compliance with the fact that Tryplion sexilitu- 

 ratus Gravenhorst was the only species originally included; (see Townes, 1969); other names 

 mentioned in the original description (e.g. Cteniscus aurijhius) were then nomina nuda. Prior 

 to the description of Eudiaborns, the name Diaborus Foerster had been incorrectly applied to 

 this genus. 



Revision: Mason, 1955. Canad. Jour. Zool. 33: 21-63 (as Eudiabonis). 



Taxonomy: Kerrich, 1952. Brit. Mus. (Nat. Hist.) Ent., Bui. 2: 314-316, 415-416. —Townes, 

 Townes, and Gupta, 1965. Amer. Ent. Inst., Mem. 5: 113. —Townes, 1969. Amer. Ent. Inst., 

 Mem. 11: 188-190. -Kerrich, 1975. Polskie Pismo Ent. 40: 125-126. 

 devius (Mason). Man., Colo., Alaska; Europe. 



Eudiabonis devius Mason, 1955. Canad. Jour. Zool. 33: 34. 9. 

 dorsalis Cresson. N. S. w. to Alaska, s. to N. Y., 111., Colo., and Calif. 



Cteniscus dorsalis Cresson, 1864. Ent. Soc. Phila., Proc. 3: 282. "6" = 9. 

 Cteniscus mediatus Cresson, 1864. Ent. Soc. Phila., Proc. 3: 282. d. 

 eximius (Mason). N. Y. 



Eudiabonis exinmis Mason, 1955. Canad. Jour. Zool. 33: 33. 9. 

 flavicircus (Mason). Ont., Ohio, S. C, Ind. Host: Pristiphora sp. 



Eiidiabonis Jlavicircus Mason, 1955. Canad. Jour. Zool. 33: 27. 6 , 9. 

 glutiniatus (Roman). Maine, B. C, Alaska; N. Eurasia. 



Diaboms glutiniatus Roman, 1909. In Hamburg, Naturw. Unters. Sarekgebirges, v. 4, p. 

 282. i, 9. 

 leptonyx (Mason). Newfoundland (Labrador) w. to Alaska, s. to Man., Colo., Ariz., and Calif. 



Eiidiabonis leptonyx Mason, 1955. Canad. Jour. Zool. 33: 37. 6, 9. 

 luminosus (Mason). N. Y. 



Eudiabonis luminosus Mason, 1955. Canad. Jour. Zool. 33: 40. 9. 

 maculiventris maculiventris (Ashmead). Newfoundland (Labrador) w. to B. C, s. to Mass. and 

 Colo. 

 Diaboms maculiventris Ashmead, 1896. Amer. Ent. Soc, Trans. 23: 197. 6. 

 Diaboms ignipes Davis, 1897. Amer. Ent. Soc, Trans. 24: 231. 9. 

 maculiventris sexmaculatus (Ashmead). N. W. T., N. Man., Alaska. More northwestern than 

 the nominate subspecies, m. sexmaculatus probably having decended from a 

 Palearctic-Beringian glacial refugium. A third subspecies, m. borioalpinus Kerrich, 

 occurs in Europe and is rather similar to m. sexmaculatus. 

 Diaboms sexmaculatus Ashmead, 1902. Wash. Acad. Sci., Proc. 4: 212. 6. 



nigrocephalus (Davis). Conn., Md., Ga. 



Diaboms nigrocephalus Davis, 1897. Amer. Ent. Soc, Trans. 24: 232. 9. 

 promediatus arizonicus (Mason). N. Mex., Ariz. 



Eudiabonis promediatus arizonicus Mason, 1955. Canad. Jour. Zool. 33: 60. 9. 

 promediatus cressoni (Mason). N. Y. w. to s. Ont. and Mich., s. to Va. Host: Nematiis 

 salicisodoratus Dyar. 



Eudiabonis promediatus cressoni Mason, 1955. Canad. Jour. Zool. 33: 59. 6, 9. 

 promediatus promediatus (Mason). Newfoundland (insular) w. to Alaska, s. to N. S., s. Ont., 

 Minn., Colo., and B. C. Host: Nematus currani Ross, Hemichroa crocea (Geoff.). 



Eudiabonis promediatus promediatus Mason, 1955. Canad. Jour. Zool. 33: 56. S, 9. 

 pulchellus (Mason). Mass., N. J., Pa., Md., Mich. 



Eudiabonis pulchellus Mason, 1955. Canad. Jour. Zool. 33: 50. 6, 9. 

 pyelechus (Mason). Mass., N. J., Pa., Md., Mich. 



Eudiabonis pyelechus Mason, 1955. Canad. Jour. Zool. 33: 25. 6, 9. 

 scaphuloides (Mason). Que., Maine, R. I., Md., Ont., Mich., Idaho. 



Eudiabonis scaphuloides Mason, 1955. Canad. Jour. Zool. 33: 40. 6, 9. 



