Superfamily ICHNEUMONOIDEA 481 



Sphalerus Kriechbaumer, 1878. Ent. Naehr. 4: 41. 



Type-species: Sphalerus bifasciatus Kriechbaumer. Monotypic. The type-species is 

 regarded as a synonym of A. albicinctus Gravenhorst. 

 Retanixia Cameron, 1886. Biol. Cent.-Amer., Hym., v. 1, p. 299. 



Type-species: Retanisia facialis Cameron. Monotypic. 



This moderate sized genus is Holarctic and Neotropic (mountains of Me.xico and Guatemala). 

 The known hosts include Cerambycidae, Melandryidae, Buprestidae, and Mordellidae. 



amoenus Cresson. Que. w. to Minn., s. to w. N. C. and n. Ga. Host: Melandrya striata Say. 

 Acaenitus amoenus Harris, 1835. In Hitchcock, Rpt. Geol. Mineral. Bot. Zool. Mass., ed. 2, 



p. 586. Nomen nudum. 

 Arotes at)ioenus Cresson, 1868. Canad. Ent. 1: 34. 9. 

 Tropistes elegayis Provancher, 1874. Nat. Canad. 6: 80. 6. 

 decorus (Say). Mann. s. to Ga., w. to Wis., e. Kans., and e. Tex. Host: Towoxia bidentata (Say). 



Acaenitus decorus Say, 1836. Boston Jour. Nat. Hist. 1: 248. 9 (6 misdet.). 

 maurus Rohwer. Northern Minn., w. Sask., central Alta., s.w. B. C. May be only subspecifically 

 distinct from A. a)iioeuus Cresson. 

 Arotes tiiaunis Rohwer, 1920. In Cushman and Rohwer, U. S. Natl. Mus., Proc. 57: 517. 9. 

 melleus (Say). N. Y., N. J., Pa., Md., D. C, w. N. C, s. Mich., s.w. Ind. Host: Metacmaeops 

 vittatus (Swed.). 

 Acaenitus melleus Say, 1836. Boston Jour. Nat. Hist. 1: 249. 9. 



Genus SPILOPTERON Townes 



Spilopteron Townes, 1960. In Townes and Townes, U. S. Natl. Mus. Bui. 216 (pt. 2): 568. 

 Type-species: Spilopteron franclemonti Townes. Orig. desig. 



This is a small Holarctic and Oriental genus. 



formosum (Cresson). Que. w. to s.w. Man., s. to s.e. Ga. Host: Bellamira scalaris (Say). 

 Arotes fomiosus Cresson, 1868. Canad. Ent. 1: 34. 6. 

 Spilopteron formosum australe Townes, 1960. In Townes and Townes, U. S. Natl. Mus. 



Bui. 216 (pt. 2): 573. 6, 9. N. syn. 

 franclemonti Townes. N. B. w. to s. Man., s. to N. Y., s. Ohio, and Minn. 



Spilopteron franclemonti Townes, 1960. In Townes and Townes, U. S. Natl. Mus. Bui. 216 



(pt. 2):569. 6,9. 

 occiputale (Cresson). Mass. w. to Mich., s. to e. N. C, n.w. S. C, and s. Ind. Host: Strangalia 



bicolor (Swed.). 

 Arotes occiputalis Cresson, 1869. Amer. Ent. Soc, Trans. 2: 260. 6. 

 Arotes apicalis Davis, 1898 (1897). Amer. Ent. Soc, Trans. 24: 366. 9. 

 vicinum (Cresson). N. S. w. to s.w. N. W. T., s. to Va., Tex., Colo., and n.w. Oreg. Host: 



Anoplodera nigrella (Say), A. rubrica (Say)?, A. vagans (Oliv.)?, Metacmaeops vittatus 



(Swed.). The two "subspecies" recognized by Townes and Townes (1960) were largely 



sympatric. 

 Arotes vicinus Cresson, 1869. Amer. Ent. Soc, Trans. 2: 260. 6. 

 Arotes venustus Cresson, 1869. Amer. Ent. Soc, Trans. 2: 260. 6,9. 

 Arotes superbus Provancher, 1874. Nat. Canad. 6: 81. 6, 9. 

 Spilopteron vicinum melanderi Townes, 1960. In Townes and Townes, U. S. Natl. Mus. 



Bui. 216 (pt. 2): 575. 6,9. N. syn. 



Genus YEZOCERYX Uchida 



Yezoceryx Uchida, 1928. Hokkaido Imp. Univ., Faculty Agr., Jour. 25: 36. 



Type-species: Yezoceryx scutellaris Uchida. Monotypic and orig. desig. 



This is a large Holarctic and Oriental genus; the majority of the species are Oriental. 



rupinsulensis (Cresson). Central Mich., 111., s.e. Minn. 



Acaenitus rupinsulensis Cresson, 1870. Amer. Ent. Soc, Trans. 3: 143. 9. 



