722 Hymenoptera in America North of Mexico 



rufiventris (Gravenhorst). Newfoundland and n. Que. w. to N. W. T. and Alaska, s. to Conn., w. 

 N. C, s. Iowa, n. Idaho, and n.w. Oreg.; Europe. 

 Bassiis rufiventris Gravenhorst, 1829. Ichn. Europaea, v. 3, p. 312. 6. 

 Bassus suspiciosus Brischke, 1871. Phys.-Oekonom. Gesell. Koenigsberg, Schr. 11: 106. 9. 

 Zootrepkes antennatus Davis, 1895. Amer. Ent. Soc, Trans. 22: 23. i, 9. 

 TymmopJwrus lacustris Schmiedeknecht, 1913. Opusc. Ichn., v. 5, p. 2714. 9. 

 thunbergi Dasch. Que., N. H., Mass., Ont., n. Man., Alaska, B. C. The occurrence of this species 

 at Nome, Alaska (on the Seward Peninsula) makes it highly probable that it will prove 

 to be Holarctic. 

 Tymmophonis thunbergi Dasch, 1964. Amer. Ent. Inst., Mem. 3: 79. 6, 9. 



Genus DIPLAZON Viereck 



Bassus auct., nee Fabricius. Although no species of Diplazontinae were placed in Bassus 

 by Fabricius, the name was for many years applied to to Diplazontinae, in later years 

 more particularly to species of Diplazon. 



Diplazon Nees ab Esenbeck, 1819 (1818). In Gravenhorst, Nova Acta Leopoldina 9: 292. 

 Nomen nudum. Diplazon Nees ab Esenbeck is cited as a synonym of Bassus Fabricius 

 in this paper by Gravenhorst. In his discussion of Bassus, Gravenhorst referred to a 

 footnote consisting of a quotation from a letter he had received from Nees ab Esenbeck 

 on Dec. 25, 1918 wherein Nees ab Esenbeck mentioned the name Diplazon. Nothing in 

 the footnote makes the name available. Gravenhorst did nothing to validate Diplazon 

 because he did not associate it with a valid specific name (even when names of genera 

 described without included species are placed in synonymy, species are not thereby 

 placed in them). 



Diplazon Viereck, 1914. U. S. Natl. Mus., Bui. 83: 46. 



Type-species: Ichneumon laetatorius Fabricius. Monotypic and orig. desig. 



This is a moderate sized genus of worldwide distribution. 



albotibialis Dasch. Northern Que., Alaska. 



Diplazon albotibialis Dasch, 1964. Amer. Ent. Inst, Mem. 3: 53. 3, 9. 

 algidus Dasch. Newfoundland (n. Labrador) w. to n. Yukon and Alaska, s. to n. Man., Colo., 

 s.w. Alta., and B. C; n.e. Greenland; Norwegian Lapland. 

 Diplazon algidus Dasch, 1964. Amer. Ent. Inst, Mem. 3: 51. 6, 9. 

 angustus Dasch, P. E. I., n. Man., w. N. W. T., n. Yukon, interior Alaska, n.e. Calif. 



Diplazon angustus Dasch, 1964. Amer. Ent. Inst., Mem. 3: 46. 6, 9. 

 bradleyi Dasch. Que., s. Man., n. Colo., w. N. W. T., Alaska, B. C, w. Wash. 



Diplazon bradleyi Dasch, 1964. Amer. Ent. Inst., Mem. 3: 37. 6, 9. 

 cascadensis Dasch. Southwestern Alta., n.w. Wash. The type locality is Cascade Mt., Banff 

 Natl. Park, Alta. (not "Banff, at 7,000-8,000 ft. in the Cascade Mts."). 

 Diplazon cascade7isis Dasch, 1964. Amer. Ent. Inst., Mem. 3: 49. 6, 9. 

 constrictus Dasch. Colo., n.e. Calif. 



Diplazon constrictus Dasch, 1964. Amer. Ent. Inst, Mem. 3: 47. S, 9. 

 deletus Thomson. Northern Que. w. to Alaska, s. to Conn., w. N. C, Colo., n. Utah, and n.w. 

 Oreg.; Europe. The subspecific classification of Dasch (1964) is difficult to reconcile 

 zoogeographically, particularly in view of the fact that nothing is known about 

 populations of deletus which presumably exist in northeastern Asia; therefore, no 

 subspecies of deletus are recognized here. 

 Bassus deletus Thomson, 1890. Opusc. Ent 14: 1471. 6,9. 



Diplazon deletus fuscifemoratiis Dasch, 1964. Amer. Ent. Inst, Mem. 3: 43. 6, 9. N. syn. 

 flavifrons Dasch. Southwestern B. C, w. Wash., n.w. Calif. 



Diplazon flavifrons Dasch, 1964. Amer. Ent. Inst, Mem. 3: 39. S, 9. 

 galenensis Dasch. Southern Idaho. Known from two specimens collected at an elevation of 

 8600 ft. on Galena Summit, Blaine Co., Idaho. 

 Diplazon galenensis Dasch, 1964. Amer. Ent. Inst, Mem. 3: 45. 6, 9. 

 insulcatus Dasch. Southwestern Alta., w. Wash. 



Diplazon insulcatus Dasch, 1964. Amer. Ent. Inst., Mem. 3: 58. 6, 9. 



