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Parasitic on Siricidae. The European species leucoiipoides Hochenwarth has been successfully
introduced into New Zealand for the control of Sirex noctilio (Fabricius) in plantings of in-
troduced species of Pinus. I. leiicoapoicles is now considered to be a senior synonym of ciiltella-
tor Fabricius.
Taxonomy: Weld, 1952. Cynipoidea 1905-1950, p. 150 (key to U. S. spp.).
Biology: Cameron, 1965. Commonwlth. Inst. Biol. Control, Tech. Bui. 5: 18.
Ibalia anceps Say
Minn., Ark., Tex.
Ibaliu ancepn Say, 1824. /ยป Keating, Narr. Long's 2nd Exped., App., p. 325. ♀.
leucospoides ensiger Norton. Transcont. introd. into N. Zeal, and Australia. Ibalia
leucospoides leucospoides (Hochenwarth) is Palearctic. Host: Siricidae and Syntexidae in
conifers.
Ibalia ensiger Norton, 1862. Ent. Soc. Phila., Proc. 1: 200. ♀.
Biology: Wickman, 1964. Pan-Pacific Ent. 40: 19. — Wickman, 1967. Ent. Soc. Amer., Ann. 60:
1294. —Cameron, 1968. Pan-Pacific Ent. 44: 168. -Zondag, 1969. New Zeal. Jour. Sci. 12:
744.
Ibalia maculipennis Haldeman
Que., Ont., Eastern U. S. Host: Tremex coloviba (L.). Differs from
Ibalia scalpellator Westwood
only by slight differences in color, teste Weld, 1952. Cynipoidea
1905-1950, p. 150.
Ibalia maculipennis Haldeman, 1846. Acad. Nat. Sci. Phila., Proc. 3: 127. ♀.
Ibalia fasciipennis Kieffer, 1909. Soc. Hist. Nat. Metz, Bui. 26: 57. ♀.
Morphology: Snodgrass, 1941. Smithsn. Misc. Collect. 99: 37 (male genitalia).
Ibalia montana Cresson
Labrador, Nev., Wash., Oreg., Calif.
Ibalia montana Cresson, 1879. Amer. Ent. Soc, Trans. 7: Proc. xvii. 9.
Ibalia ruficollis Cameron
N. Mex., Ariz.; Mexico. Host: Sirex in conifers.
Ibalia ruficollis Cameron, 1884. Roy. Ent. Soc. London, Trans. 1884: 488. ♀.
rufipes rufipes Cresson. Nova Scotia, N. B., Que., Ont., Man., Alta., Host: Sirex cyaneus Fab.,
Urocerus gigas flacicornis (Fab.). The subspecies rufipes drewseni Borries is Palearctic.
Ibalia rufipes Cresson, 1879. Amer. Ent. Soc, Trans. 7: Proc. xvii. 9.
Ibalia gigantea Yoshimoto, 1970. Canad. Ent. 102: 1196. ♀, ♂.
Ibalia scalpellator Westwood
Ga.
Ibalia scalpellator Westwood, 1837. In Guerin, Mag. Zool. 7: cl. 9, pi. 179, fig. 2. ♂.
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