Superfamily ICHNEUMONOIDEA 711 



moabae Dasch. Southeastern Utah. Ecology: The only two specimens known were collected at 



an elevation of 9200 ft. 

 Mesochoms moabae Dasch, 1971. Amer. Ent. Inst., Mem. 16: 147. 9. 

 naknekensis Dasch. Northern Que. w. to w. N. W. T. and Alaska, s. to N. H., Colo., and n.e. 



Calif. Ecology: One of the paratypes should be presumed to have been reared from a 



parasite of Spargania magnoliata Gn. (Geometridae). 

 Mesochoms yiaknekensis Dasch, 1971. Amer. Ent. Inst, Mem. 16: 63, 177. (J, 9. The 



misspelling "naknakensis" appeared on p. 63. 

 nigripes Ratzeburg. Western Colo. The overwhelming evidence is that this species was 



unintentionally introduced along with Bathyplectes stenostigma (Thomson) in 1969. 



Host: Bathyplectes curculionis (Thom.), B. stenostigma (Thom.). The fact that only 



females of M. nigripes are known from Colo, suggest the possibility that two 



morphologically similar species may be confused under the name nigripes in Europe. 

 Mesochoms nigripes Ratzeburg, 1852. Ichn. d. Forstins., v. 3, p. 119. 6. 

 Mesochoms gibbulus Holmgren, 1856 (1854). Svenska Vetensk.-Akad. Hand. 75: 60. 9. 



noctivagus Viereck. Northwestern S. C, e. Kans. 



Mesochoms noctivagus Viereck, 1905. Kans. Acad. Sci., Trans. 19: 303. 9. 

 obliteratus Dasch. Pa., Mich., n. Man., e. Wash. Host: Grisdalemyia sp. ex Chrysomela sp. 



Mesochrus obliteratus Dasch, 1971. Amer. Ent. Inst., Mem. 16: 206. cJ, 9. 



obsoletus Dasch. Western B. C. 



Mesochoms obsoletus Dasch, 1971. Amer. Ent. Inst., Mem. 16: 241. S. 



ontariensis Dasch. Md., Ont., Mich. 



Mesochoms ontariensis Dasch, 1971. Amer. Ent. Inst., Mem. 16: 80. 6, 9. 

 ottawaensis (Harrington). N. S. w. to n. Alta. and Oreg., s. to N. H., n. Mich., e. N. Dak., Colo., 

 and n. Utah. 



Ischyrocnemis ottawaensis Harrington, 1892. Canad. Ent. 24: 98. 9. 



parallelus Dasch. Western Va. 



Mesochoms parallelus Dasch, 1971. Amer. Ent. Inst., Mem. 16: 82. 9. 

 parvus Dasch. Maine, N. H., Mass., N. Y., s.e. Fla., Ont., n. Mich. Ecology: Two of the 

 paratypes can be presumed to have been reared from parasites of Bucculatrix 

 canadensisella Chamb. and Heterarthrus nemoratus (Fall.). 

 Mesochoms parvus Dasch, 1971. Amer. Ent. Inst., Mem. 16: 248. 6, 9. 

 paulus Dasch. N. Y. Known only from the holotype. 



Mesochoms paulus Dasch, 1971. Amer. Ent. Inst., Mem. 16: 250. S. 

 peltatus Dasch. Western Mich., Alta., interior Alaska, s.w. B. C, Wash. 



Mesochoms peltatus Dasch, 1971. Amer. Ent. Inst., Mem. 16: 104. cJ, 9. 

 perniciosus Viereck. Southwestern Ont. s. to Iowa and Kans., w. to Alta., w. Mont., e. Idaho, 

 n.e. Utah, and N. Mex. Ecology: Reared from parasites of Loxostege sticticalis (L.) and 

 Cyclophora sermlata (Pack.). Host: Apanteles laeviceps Ash., Creynnops vulgaris (Cr.). 

 Mesochoms perniciosus Viereck, 1911. U. S. Natl. Mus., Proc. 39: 407. 9. 

 personatus Dasch. Que., n. Ont., Alta., and s. B. C, s. to Maine, Mich., and Oreg. Ecology: One 

 of the paratypes can be presumed to have been reared from a parasite of Eupithecia 

 luteata Pack. 

 Mesochoms personatus Dasch, 1971. Amer. Ent. Inst., Mem. 16: 166. J, 9. 

 pictilis Holmgren. N. S. w. to s. B. C, s. to n.w. S. C, e. Ill, Idaho, and s.w. Oreg. Ecology: Can 

 be presumed to have been reared from parasites of the following- Geometridae 

 {Aethalura anticaria [Wlk.], Biston betularia cognataria [Gn.], Campaea perlata [Gn.], 

 Deilinea sp., Ectropis crepuscularia [D. and S.], Iridopsis emasculata [Dyar], 

 Semiothisa "grayiitata" auct.), Noctuidae (Bomolocha albalienalis [Wlk.], Lithophane 

 sp.) and Pyralidae (Promylea lunigerella Rag.). 

 Mesochoms pictilis Holmgren, 1860 (1858). Svenska Vetensk.-Akad. Handl. (n. f.) 2 (8): 

 131. 3, 9. 

 platygorytos Dasch. Que. Ecology: The unique holotype should be presumed to have been 

 reared from a parasite of Psilocorsis sp. 

 Mesochoms platygorytos Dasch, 1971. Amer. Ent. Inst., Mem. 16: 86. 9- 



