27. The Morphology and Anatomy of the Immature and Adult Stage s of Oligotrophus oleariæ Mask. (Cecidomyidæ, Diptera)


  • Joan A. T. Anderson M.Sc.

    1. (formerly of Victoria University College, Wellington, New Zealand), Rothamsted Experimental Station, Harpenden, Herts
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    • *Communicated by H. F. Barnes, M.A., Ph.D., C.M.Z.S.


  • 1The gall-midge, Oligotrophus oleariæ, attacking the New Zealand native shrub Shawia (Olearia) paniculata Cheesem. has been re-classified as Oligotrophus oleariæ Mask. The midge causes damage only to the young buds of the plant, and does not attack the leaves, as was originally supposed.
  • 2The life-history of the midge is described briefly. The larva is parasitized by two species of hymenopterous insects, Pteromalus sp. and Metaclisis oleariæ Mask.
  • 3A description of the externals of the larva, pupa, and imago is given, together with an account of the anatomy of the larva and the imago.