Superfamily ICHNEUMONOIDEA 601 



conformus Davis. N. H., R. I., Alta. 



Mesoleins confonnits Davis, 1898 (1897). Amer. Ent. Soc, Trans. 24: 300. 6, 9. 



cressoni (Davis). Tex. 



Holnigrenia cressoni Davis, 1898 (1897). Amer. Ent. Soc, Trans. 24: 293. 9. 



Hohngrenia cressonii Dalla Torre, 1901. Cat. Hym., v. 3, p. 270. Emend. 

 excavatus (provancher). Que. 



Tryphon excavatus Provancher, 1875. Nat. Canad. 7: 310. 6. 



Ta.\onomy: Barron, 1975. Nat. Canad. 102: 468. 

 insidiosus (Cresson). N. H., Mass., N. Y., Pa., Ont., Ohio, Mich., Iowa, Colo. 

 Mesoleptus insidiosus Cresson, 1868. Amer. Ent. Soc, Trans. 2: 98. 6. 

 Mesoleius convergens Davis, 1898 (1897). Amer. Ent. Soc, Trans. 24: 296. 9. 

 Mesoleiiis visoris Davis, 1898 (1897). Amer. Ent. Soc, Trans. 24: 296. 6,9. 



Taxonomy: Townes, 1970 (1969). Amer. Ent. Inst., Mem. 13: 125 (syn.). 

 minor (Ashmead). Southwestern Alasita. 



Calliphnirus affinis Ashmead, 1902. Wash. Acad. Sci., Proc. 4: 221. 9. Preocc. in 



Mesoleius by Brischite, 1892. 

 Calliphnirus minor Ashmead, 1902. Wash. Acad. Sci., Proc. 4: 221. 6, 9. 

 Mesoleius congener Walkley, 1958. In Krombein et ai, U. S. Dept. Agr., Agr. Monog. 2, 

 Sup. 1, p. 55, 56. N. name for C. affinis Ashmead. 



Taxonomy: Townes, 1970 (1969). Amer. Ent. Inst., Mem. 13: 125 (syn.). 

 pertinax Davis. Maine, N. H. 



Mesoleius pertinax Davis, 1898 (1897). Amer. Ent. Soc, Trans. 24: 299. 6,9. 

 pulchranotus Davis. N. Y.?, Tex. Host: Periclista media (Nort.)? 



Mesoleius pulchranotus Davis, 1898 (1897). Amer. Ent. Soc, Trans. 24: 298. 6. 

 stejnegeri Ashmead. Eastern U. S. S. R. The type locality is Ostrov Bering (i.e. Bering Isl.), U. 



5. S. R.; this was incorrectly indicated as an Alaskan locality in previous Nearctic 

 catalogs of Ichneumonidae. However, it seems likely that the species will be found in 

 the Aleutian Islands. 



Mesoleius stejnegeri Ashmead, 1899 (1898). In Jordan, Fur Seals and Fur Seal Isls. No. 

 Pacific, V. 4, p. 337. 9. 

 submarginatus (Cresson). Que., N. W. T.?, and B. C, s. to N. C, III, and Colo. 

 Tryphon^ submarginatus Cresson, 1864. Ent. Soc. Phila., Proc 3: 274. 6. 

 tarsalis (Cresson). Que., R. I., Conn., N. Y., Md., N. C, Alta. Host: Croesus latitarsus Nort. 



Tryphon tarsalis Cresson, 1868 Amer. Ent. Soc, Trans. 2: 106. 9 {6 misdet.?). 

 tenthredinis Morley. Newfoundland (insular) w. to n. Alta. and central B. C, s. to n. Md., Wis., 

 and Mont.; Europe; Japan. Introduced. Host: Pristiphora erichsonii (Htg.), Gilpinia 

 hercyniae (Htg.). Parasitism of G. hercyniae appears at most to be very occasional. 

 Effectiveness as a parasite of P. erichsonii decreased greatly as a resistant strain of 

 erichsonii capable of encapsulating the eggs of M. tenthredinis spread throughout much 

 of the present Nearctic range of erichsonii. Attempts to diversify the gene pool of the 

 North American population of tenthredinis (EngHsh origin) by releasing specimens from 

 Bavaria which are resistant to egg encapsulation are presumably too recent (1963 

 through 1969) for signs of success to be evident. 

 Mesoleius tenthredinis Morley, 1912. In Hewitt, Canada Expt. Farms, Bui. (ser.2) 10: 26. 



6, 9. 



Mesoleius romani Teunissen, 1945. Leyden Rijks Mus. van Natuurlijke Hist., Zool. Meded. 

 25:209. 6,9. 



Taxonomy: Townes and Townes, 1951. In Muesebeck et ai, U. S. Dept. Agr., Agr. Monog. 2: 

 334 (syn.). 



Biology: Hewitt, 1912. Canada Expt. Farms, Bui. (ser. 2) 10: 25-28. -Graham, 1931. Canad. 

 Ent. 63: 99-102. —Hopping, Leach, Hugh, and Morgan, 1943. Sci. Agr. 24: 58. — Lejeune, 

 1946. Canada Dept. Agr., Sci. Serv., Div. Ent., Forest Insect Invest, Bi-mon. Prog. Rpt. 3 

 (2): 2-3. — Drooz, 1953. Jour. Econ. Ent. 46: 828. —Graham, 1953. Quebec Soc. Prot. Plants, 

 Ann. Rpt. 35: 61. — Muldrew, 1953. Canad. Jour. Zool. 31: 313. — Muldrew, 1956. Forestry 



