Superfamily ICHNEUMONOIDEA 377 



Tribe EXENTERINI 



The name Cteniscini Woldstedt (1877) is often used for this tribe, but Exenterini Foerster 

 (1868) seems to be favored as much by recent authors; because the latter name has the addi- 

 tional advantage of being oldest, it is used here. 



Revision: Davis, 1897. Amer. Ent. Soc, Trans. 24: 227-240. — Kerrich, 1952. Brit. Mus. (Nat. 

 Hist.) Ent., Bui. 2: 307-459. (Old World spp.). 



Genus ORTHOMISCUS Mason 



Orthomiscus Mason, 1955. Canad. Jour. Zool. 33: 63. 



Type-species: Orthomiscus platyura Mason. Orig. desig. 



Taxonomy: Mason, 1962. Canad. Ent. 94: 1273-1274. 

 leptura Mason. Que., N. H., Vt., Ont., Calif. 



Orthomiscus leptura Mason, 1955. Canad. Jour. Zool. 33: 64. S, 9. 

 platyura Mason. Que. w. to Mich., s. to Md. and Alta. 



Orthomiscus platyura Mason, 1955. Canad. Jour. Zool. 33: 66. 6, 9. 



Genus EXCAVARUS Davis 



Excavanis Davis, 1897. Amer. Ent. Soc, Trans. 24: 233. 



Type-species: Cteniscus annulipes Cresson. Desig. by Viereck, 1914. 



Taxonomy: Mason, 1962. Canad. Ent. 94: 1293-1296. 

 annulipes (Cresson). N. B. w. to Minn., s. to S. C. and 111. Host: Croesus latitarsus Nort. 



Cteniscus annulipes Cresson, 1868. Amer. Ent. Soc, Trans. 2: 112. "<?" = 9. 

 etrocaulus etrocaulus Mason. Alta., Colo., B. C, Oreg. 



Smicroplectnis etrocaulus etrocaulus Mason, 1956. Canad. Jour. Zool. 34: 149. 6, 9. 

 etrocaulus eurus Mason. N. B., Que., Mass., Mich., Minn. 



Smicroplectnis etrocaulus eiinis Mason, 1956. Canad. Jour. Zool. 34: 150. 9. 

 velox (Walley). Que., Maine, Ont., Sask., N. Mex., Alta., B. C. Host: Pikonema alaskensis 

 (Roh.), P. dimmockii (Cr.). 



Smicroplectnis velox Walley, 1937. Canad. Ent. 69: 132. 9. 



Genus EXYSTON Schiodte 



Exyston Schiodte, 1839. Mag. Zool., sect. 3, (ser. 2) 1 (pi. 6-9): 12. 



Type-species: Ichneumon cinctulus Gravenhorst. Monotypic 

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



Type-species: Exentenis pratonim Woldstedt. By subsequent monotypy from 

 inclusion by Woldstedt, 1877. 

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



Type-species: Cteniscus {Diabonis) sedulus Woldstedt. Desig. by Viereck, 1912 

 from two species included by Woldstedt, 1877. The type-species is regarded as a 

 synonym of Exyston pratonim (Woldstedt). 

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



Type-species: Ariecphysis curvineura Davis. By subsequent monotypy from 

 inclusion by Davis, 1897. 

 Parexyston Kerrich, 1952. Brit. Mus. (Nat. Hist.) Ent., Bui. 2: 392. 



Type-species: Exyston calcaratus Thomson. Monotypic and orig. desig. 



According to Mason (1959) most of the species are found in grassy places. He presumed that 

 they are mainly parasitic upon "sod-feeding" Dolerinae, but the only North American species so 

 far reared (mactilosum [Provancher]) parasitizes Pristiphora spp. (Nematinae) on Salix and 

 Vaccinium. 



Revision: Mason, 1959. Canad. Jour. Zool. 37: 1067-1115. 



atnim Mason. B. C, Wash., Oreg. 



Exyston (Anecphysis) ater Mason, 1959. Canad. Jour. Zool. 37: 1095. 6,9. 



