188 Hymenoptera in America North of Mexico 



cuniculus Walley. N. B., Ont., Wis., Man., S. Dak., Sask., Mont., Colo., Idaho, Calif. Host: 

 Petrova albicapitana alhicapitana (Busck), P. a. arizonensis (Heinr.), P. metallica 

 (Busck). 

 Macroceninis cuniculus Walley, 1933. Canad. Ent. 65: 260. 9. 



delicatus Cresson. Que. s. to Fla., w. to Man. and Tex. Host: Aristotelia absconditella (Wlkr.), 

 Caristanius sp., Chionodes sp., Epiblema sirenuanum (Wlkr.), E. tripartitaniim (Zell.), 

 Episimus argutanus (Clem.), Euzophera ostricolorella Hulst, Grapholitha ynolesta 

 (Busck), G. tristrigana (Clem.), Gretchena bolliana (Sling.), Hendecaneura shaiviana 

 (Kearf.), Laspeyresia pomonella (L.), Ostrinia nubilalxs (Hbn.), Papaipema nebris 

 (Guen.), Proteoteras willingana (Kearf.), Rhopobota naevana (Hbn.), Tetralopha 

 scortealis (Led.), T. siibcanalis (Wlkr.). This species is a common parasite of the oriental 

 fruit moth (Grapholitha molesta) and the ragweed borer (Epiblema strenuanum). 

 Macrocentnis delicatus Cresson, 1872. Amer. Ent. Soc, Trans. 4: 178. 9,6. 



Biology: Allen, 1962. U. S. Dept. Agr., Tech. Bui. 1265, p. 19, 24-25. 

 dioryctriae Muesebeck. Md. s. to Fla.; Miss., Ark. Host: Dioryctria abietella (D. and S.), D. 

 amatella (Hulst), D. clarioralis (Wlkr.), D. disclusa Hein., Eucosma sp. 

 Macrocentnis dioryctriae Muesebeck, 1967. Fla. Ent. 50: 60. 9, 3. 

 exartemae Walley. Que., Maine, N. J., Ont. Host: Choristoneura rosaceana (Harr.), Exartema 

 comanum Heinr., E . fasciatanum Clem., E.footinamim (Fern.), E. valdanum McD. 

 Macrocentnis exartemae Walley, 1932. Canad. Ent. 64: 183. 9. 

 grandii Goidanich. Holarctic. Introduced from France, Japan and Korea. Host: Ostrinia 

 nubilalis (Hbn.). This species, which is an important parasite of the European corn 

 borer, was incorrectly identified in early introductions to North America as 

 Macrocentnis gifuensis Ashmead. 

 Macrocentnis grandii Goidanich, 1937. Inst. Ent. Univ. Bologna, Bol. 9: 196. 9. 



Taxonomy: Eady and Clark, 1964. Ent. Gaz. 15: 121-122. 



Biology: Parker, 1931. U. S. Dept. Agr., Tech. Bui. 230, p. 1-63 (as gifuensis Ashmead). 

 —Clausen, 1956. U. S. Dept. Agr., Tech. Bui. 1139, p. 113 (as gifuensis Ashmead). 

 gravitarsis Muesebeck. N. Mex., Oreg., Calif. Host: Halisidota argentata Pack., H. ingens Hy. 

 Edw. 

 Macrocentnis gravitarsis Muesebeck, 1938. Ent. Soc. Wash., Proc. 40: 170. 9. 

 impressus Muesebeck. N. S. s. to Fla., w. to Ont, Wis. Host: Psilocorsis cryptolechiella 

 (Chamb.), P. reflexella Clem. 

 Macrocentnis impressus Muesebeck, 1932. U. S. Natl. Mus., Proc. 80 (23): 24. 9. 

 incompletus Muesebeck. Sask. s. to Kans. and N. Mex., w. to Alta., Oreg., and Ariz. Host: 

 Euxoa auxiliaris (Grote). 

 Macrocetitnis incompletus Muesebeck, 1932. U. S. Natl. Mus., Proc. 80 (23): 12. 9, 6. 

 infumatus Muesebeck. Mich. Host: Schoenobius melinellus (Clem.). The original description of 

 infumatus lists Schoenobius melinellus only as probably being the host. 

 Macrocentnis infiimatuusd) Muesebeck, 1938. Ent. Soc. Wash., Proc. 40: 172. S. 

 innuitorum Walley. N. W. T. (Baffin Isl.; Keewatin Dist.). 



Macrocentnis innuitonim Walley, 1936. Canad. Ent. 68: 187. 9,6. 

 instabilis Muesebeck. Vt. s. to Fla., w. to Ont. and Tex.; Wash. Host: Acrobasis betulella 



Hulst, A. caryae Grote, A. caryivorella Rag., A. hebescella Hulst, A.jiiglandis (LeB.), A. 

 nuxvorella Nuenzig, A. rubrifasciella Pack., Coleophora malivorella Riley, Grapholitha 

 molesta (Busck), Homaledra sabalella (Chamb.), Laspeyresia caryana (Fitch), L. 

 pomonella (L.), Rhyacionia rigidana (Fern.). 

 Macrocentnis instabilis Muesebeck, 1932. U. S. Natl. Mus., Proc. 80 (23): 34. 9, d. 

 Macrocentnis laspeyresiae Muesebeck, 1932. U. S. Natl. Mus., Proc. 80 (23): 37. 9,6. 



Biology: Nickels, Pierce, and Pinkney, 1950. U. S. Dept. Agr., Tech. Bui. 1011, p. 8-9. -Allen, 

 1962. U. S. Dept. Agr., Tech. Bui. 1265, p. 26. — Balduf, 1968. Ent. Soc. Amer., Ann. 61: 466. 

 iridescens French. Que. s. to Mass., w. to B. C. and Calif. Host: Archips argyrospilus (Wlkr.), 

 A. cerasivoranus (Fitch), A. rosanus (L.), Cheimophila salicella (Hbn.), Choristoneura 

 conflictana (Wlkr.), C. fractivittana (Clem.), C.fumiferana (Clem.), C. rosaceana (Harr.), 



