464 Hymenoptera in America North of Mexico 



rugifrons (Townes). Ariz., Calif. 



TrachyspliyruK nigifrouH Townes, 1962. In Townes and Townes, U. S. Natl. Mus. Bui. 216 

 (pt. 3):255. 6,9. 

 ruralis Pratt. Southern Man., s. Sask, n. Colo., s. Alta., Ida., s. B. C. 



Cryptun niralix Pratt, 1945. Amer. Midland Nat. 34: 637. 9. 

 scapulatus (Townes). Calif. 



Tracliyaphynts scapulatus Townes, 1962. In Townes and Townes, U. S. Natl. Mus. Bui. 

 216 (pt. 3): 241. d, 9. 

 sodalis rugosiscutum Pratt. Southern Oreg., Calif. 



Cryptus rugosiscutu))! Pratt, 1945. Amer. Midland Nat. 34: 572. 9. 



Taxonomy: Townes, 1970 (1969). Amer. Ent. Inst., Mem. 12: 194. 

 sodalis sodalis Cameron. Tex., Colo., N. Mex., Ariz.; Mexico. 



Cryptus sodalis Cameron, 1885. Biol. Cent.-Amer., Hym., v. 1, p. 204. [female]. 

 Cryptus cmssisculptus Pratt, 1945. Amer. Midland Nat. 34: 573. c^, 9. N. syn. 

 Cryptus flagellatus Pratt, 1945. Amer. Midland Nat. 34: 574. 9. N. syn. 

 Trachysphyrus rugosiscutum binarius Townes, 1962. In Townes and Townes, U. S. Natl. 

 Mus. Bui. 216 (pt. 3): 226. 9. 



Taxonomy: Townes and Townes, 1966. Amer. Ent. Inst., Mem. 8: 70, 73. —Townes, 1970 

 (1969). Amer. Ent. Inst., Mem. 12: 194. 



Genus XYLOPHRURUS Foerster 



Xylophrunts Foerster, 1868. Naturh. Ver. Rheinlande, Verh. 25: 169. 



Type-species: Echthnts laticifer Gravenhorst. By subsequent monotypy from 

 inclusion by Schmiedeknecht, 1888. The name of the type-species has been 

 incorrectly suppressed as a synonym of Ichneumon rf/spa r Thunberg; the latter is 

 preocc. by Gmelin, 1790. 

 Nyxeophilus Foerster, 1868. Naturh. Ver. Rheinlande, Verh. 25: 187. 



Type-species: Cryptus biniaculafus Gravenhorst. Included and desig. by Thomson 

 (1885). In placing species in Nyxeophilus, Thomson (1885) said "Nyxeophilus 

 mihi," and Thomson (1897) said "Nyxeophilus Thomson," which led Perkins (1962) 

 to treat Nyxeophilus Thomson as a proposal of a new genus, and this seems 

 inconsistent with his p. 387 discussion of Thomson's use of the Foerster names. 

 The type-species is regarded as a synonym of X. augustus (Dalman). 

 Macrocryptus Thomson, 1873. Opusc. Ent. 5: 486. 



Type-species: Echthnis lancifer Gravenhorst. Monotypic. 

 Xylophruridea Viereck, 1912. U. S. Natl. Mus., Proc. 42: 646. 



Type-species: Xylophruridea agrili Viereck. Monotypic and orig. desig. 



Revision: Cushman, 1919. U. S. Natl. Mus., Proc. 55: 536-540 (as Cryptoideus). 



Taxonomy: Thomson, 1885. Soc. Ent. France, Ann. (6) 5: 18. —Thomson, 1897. Opusc. Ent. 11: 

 2363. -Perkins, 1962. Brit. Mus. (Nat. Hist.) Ent, Bui. 11: 387, 439. 

 agrili (Viereck). Ont., W. Va., Mich., Kans. Host: Agrilus horni Kerr., A. vittaticollis Rand. 



Both of these hosts are root borers and pupate a short distance above the ground in the 

 stems of their hosts. 

 Xylophruridea agrili Viereck, 1912. U. S. Natl. Mus., Proc. 42: 646. 9. 



Biology: Brooks, 1914. Jour. Agr. Res. 3: 184. —Brooks, 1923. U. S. Dept. Agr., Bur. Ent, 

 Monthly Let 108: 3. -Carlson, 1969. Amer. Ent Inst, Contrib. 4 (3): 39. 

 bicolor bicolor (Cushman). Colo., Alta., Idaho, Alaska, B. C. Host: Oberea sp. on Salix, 



Saperda )uoesta LeC. The type locality is Fort Collins, Colo. (Holotype collected in May, 

 [1896?] by C. F. Baker). 

 Cryptoideus bicolor Cushman, 1919. U. S. Natl. Mus., Proc. 55: 537. 9. 

 bicolor maurus Townes. Que., Ont., Mich., Man. Host: Agrilus horni Kerr. 



Xylophrurus bicolor maiirus Townes, 1962. In Townes and Townes, U. S. Natl. Mus. Bui. 

 216 (pt 3): 483. 6, 9. 



Biology: Carlson, 1969. Amer. Ent Inst., Contrib. 4 (3): 39. 



