Superfamily ICHNEUMONOIDEA 383 



on the Provancher types, authors (most importantly Cushman, 1940) have incorrectly 

 applied the name canade)isis Provancher to this species; Cushman (1940) based his 

 usage upon the erroneous assertion that there had been a male holotype of canadensis, 

 and he applied the name according to the first-revisor principle because only a female 

 specimen had then been found in the Provancher collection under the name canadensis. 



Exenterus nigrifrons Rohwer, 1920. U. S. Natl. Mus., Proc. 57: 225. "9" = 6. 



Exentenis flavissimus Cushman, 1940. U. S. Dept. Agr. Misc. Pub. 354: 12. 6, 9. 



Taxonomy: Short, 1959. U. S. Natl. Mus., Proc. 110: 425 (final-instar larva, as canadensis). 

 — Finlayson, 1960. Canad. Ent. 92: 26-28 (final-instar larva, as canade7isis). —Barron, 

 1975. Nat. Canad. 102: 440. 



Biology: Barclay, 1938. Ent. Soc. Ontario, Ann. Rpt. 69: 29-31 (as "canadensis Auct"). 



— Bobb, 1965. Jour. Econ. Ent. 58: 925 (as caitadensis). 

 pini Cushman. Nebr., Mont., Colo., Idaho, Ariz., Nev., Calif. Host: Neodiprion edidicolus Ross. 



Exenterus pini Cushman, 1940. U. S. Dept. Agr. Misc. Pub. 354: 13. 9. 

 platypes Cushman. Que., N. C, Ont., Minn. Host: Neodiprion pratti banksianae Roh. 



Exentenis platypes Cushman, 1943. Canad. Ent. 75: 173. 9. 



Taxonomy: Finlayson, 1963. Canad. Ent. 95: 489-490 (final-instar larva). 



Biology: Griffiths, 1960. Canad. Ent. 92: 654. 

 tricolor Roman. Europe. Introduced in N. B. (1937-1939), Que. (1936-1940), N. H. (1938), and 

 Vt. (1939); a 1946 recovery in N. B. indicates that the species may be established there. 

 Host: Gilpinia hercyniae (Htg.). The host listed was the target species for introductions 

 in North America. 

 Exenterus tricolor Roman, 1913. Ent. Tidskr. 34: 127. cj, 9. 



Taxonomy: Finlayson, 1960. Canad. Ent. 92: 928-929 (final-instar larva). 



Biology: Morris, Cameron, and Jepson, 1937. Bui. Ent. Res. 28: 369-375. —Barclay, 1938. Ent. 

 Soc. Ontario, Ann. Rpt. 69: 29-31. 

 tsugae Cushman. Mont., B. C, Idaho, Oreg., Calif. Host: Neodiprion tsugae Midd., N. 

 sciitellatiis Roh. 

 Exenterus tsugae Cushman, 1940. U. S. Dept. Agr. Misc. Pub. 354: 13. 6, 9. 



Biology: Fumiss and Dowden, 1941. Jour. Econ. Ent. 34: 49. 

 vellicatus Cushman. Newfoundland (insular), N. S., P. E. I., N. B., Que., Maine, N. Y., Ont. 

 Introduced. Host: Gilpinia hercyniae (Htg.). 

 Exenterus vellicatus Cushman, 1940. U. S. Dept. Agr. Misc. Pub. 354: 7. 6, 9. 



Taxonomy: Finlayson, 1960. Canad. Ent. 92: 928-930 (final-instar larva). 

 Biology: Morris, Cameron, and Jepson, 1937. Bui. Ent. Res. 28: 377 (as Exenterus sp.). 

 walleyi Cushman. N. B., Ont., Ind. Host: Neodiprion abietis (Harris), N. nanuhis nanulus 

 Schedl, A^. sertifer (Geoff.). 

 Exenterus walleyi Cushman, 1943. Canad. Ent. 75: 171. 6,9. 



Taxonomy: Finlayson, 1960. Canad. Ent. 92: 29-30 (final-instar larva). 



Genus ERIDOLIUS Foerster 



Anisoctenion Foerster, 1868. Naturh. Ver. Rheinlande, Verb. 25: 194. 



Type-species: Acroto^nus xanthopus Holmgren. By subsequent monotypy from 

 inclusion by Schmiedeknecht, 1907. The type-species is considered to be a 

 synonym of Eridolius alacer (Gravenhorst). 

 Eridolius Foerster, 1868. Naturh. Ver. Rheinlande, Verh. 25: 195. 



Type-species: Exenterus pygmaeus Holmgren. By subsequent monotypy from 

 inclusion by Thomson, 1883. 



Until recently the name Cteniscus was applied to this genus because Eridolius aurifhms 

 (Haliday) was incorrectly regarded as the type-species of Cteniscus (see discussion under 

 Cteniscus). Eridolius is Holarctic with many species of boreal distribution. Many of the species 

 occurring in the Nearctic Region are undescribed. 



