Superfamily ICHNEUMONOIDEA 717 



fraudulentus recurvatus (Dasch), n. comb. Northwestern Wash., n.e. Calif. 



Hojnotropus fraudulentus recurvatus Dasch, 1964. Amer. Ent. Inst., Mem. 3: 152. <J, 9. 

 imperfectus (Dasch), n. comb. Newfoundland (Labrador), n.w. Mich., s. B. C, Wash., n.w. Oreg. 

 Host: Syrphid. 

 Homotropus imperfectus Dasch, 1964. Amer. Ent. Inst., Mem. 3: 155. 6, 9. 

 labradorensis (Dasch), n. comb. Newfoundland (n. Labrador), Colo., s.w. Alta. 



Homotropus labradorensis Dasch, 1964. Amer. Ent. Inst., Mem. 3: 136. 6, 9. 

 lacvis Brues. Maine w. to interior Alaska, s. to S. C, s. 111., N. Mex., and Wash. Host: Syrphid 

 on Populus. 

 Syrphoctonus laevis Brues, 1908. Wis. Nat. Hist. Soc, Bui. 6: 53. 9. 

 maculifrons (Cresson). Minn. w. to central Alta. and s. B. C, s. to n.w. Iowa, n. N. Mex., n. 

 Ariz., and s. Calif.; n.w. Mexico; Hawaii. Host: Eupeodes volucris 0. S., Metasyrphus 

 perplexus (Osb.), Scaeva pyrastri (L.). 

 Bassus maculifrons Cresson, 1865. Ent. Soc. Phila., Proc. 4: 272. 9. 

 Bassus semifasciatus Walsh, 1873. Acad. Sci. St. Louis, Trans. 3: 87. 6. This synonymy is 

 dubious because the lost type of B. semifasciatus is thought to have been collected in 

 111. 

 melanogaster (Holmgren). Northern Que., N. W. T., interior Alaska, w. Wash.; Greenland. 

 Bassus ynelanogaster Holmgren, 1872. Svenska Vetensk.-Akad., Ofvers. af ... Forh. 29 (6): 

 98. cJ. 

 minimus (Cresson). Que. s. to n. Fla., w. to Minn., e. Kans., and Ark. 

 Tryphon minimus Cresson, 1864. Ent. Soc. Phila., Proc. 3: 281. 9. 

 Bassus ruficnis Walsh, 1873. Acad. Sci. St. Louis, Trans. 3: 86. "cJ" = 9. 

 nigriclypealis (Dasch), n. comb. Southern Que., s.w. Alta.; Greenland. 



Homotropus nigriclypealis Dasch, 1964. Amer. Ent. Inst., Mem. 3: 110. 9. 

 nigritarsus fuscitarsus (Provancher). Newfoundland (insular) w. to n. Yukon and Alaska, s. to 

 N. Y., s. Man., N. Mex., and s. Calif.; Mexico. Host: Eupeodes volucris 0. S. S. 

 nigritarsus nigritarsus (Gravenhorst) is Eurasian. 

 Tryphon humeralis Provancher, 1875. Nat. Canad. 7 (4): 117. "9" = 6. Preocc. by 



Gravenhorst, 1829. 

 Bassus fuscitarsus Provancher, 1875. Nat. Canad. 7 (5): 143. "S" = 9. 



nigritarsus groenlandicus (Holmgren). Greenland. 



Bassus groenlandicus Holmgren, 1872. Svenska Vetensk.-Akad., Ofvers af ... Forh. 29 (2): 

 97. 6. 

 novitus (Dasch), n. comb. Interior Alaska. Known only from the holotype. 



Homotropus novitus Dasch, 1964. Amer. Ent. Inst., Mem. 3: 130. 6. 

 nudus (Dasch), n. comb. Northern Que. w. to interior Alaska, s. to s. Mich., Colo., and n.e. Calif. 



Homotropus nudus Dasch, 1964. Amer. Ent. Inst, Mem. 3: HI. 6,9. 

 pacificus (Cresson). Western N. W. T. and Alaska s. to w. S. Dak., N. Mex., and s. Calif.; n. 

 Mexico. Host: Bigonicheta sp. 

 Bassus maculifrons Holmgren, 1869 (1868). Eug. Resa I, Zool. I, Ins., p. 410. 9. Preocc. by 



Cresson, 1865. 

 Bassus pacificus Cresson, 1879 (1878). Acad. Nat. Sci. Phila., Proc. 30: 376. 6, 9. 

 Bassus xanthopsis Ashmead, 1890 (1889). U. S. Natl. Mus., Proc. 12: 440. 6. 

 pallipes (Gravenhorst). N. S. w. to Alaska, s. to Pa., n.w. S. C, n. Minn., Colo., and s. Calif.; 

 Europe. 

 Bassus pallipes Gravenhorst, 1829. Ichn. Europaea, v. 3, p. 325. "6" = 9. 

 Bassus pallipennis Provancher, 1874. Nat. Canad. 6: 31. 9. 

 Bassus pallidipes(l) Bignell, 1898. Devonshire Assoc, Trans. 30: 500. Lapsus for B. 



pallipes Gravenhorst. 

 Homotropus pallidipennis Dalla Torre, 1901. Cat. Hym., v. 3, p. 238. Emend, of B. 



pallipennis Provancher. 

 Homotropus pallidipes Dalla Torre, 1901. Cat. Hym., v. 3, p. 238. Emend, of B. pallipes 

 Gravenhorst. 

 pectoralis (Provancher). Que. w. to s. Yukon and interior Alaska, s. to n. Va., s. Wis., and Colo. 

 Bassus pectoralis Provancher, 1874. Nat. Canad. 6: 32. cJ. 



