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Description and Morphology of the Immature Stages of Three Closely Related Species of Contarinia Rond. (Diptera: Cecidomyiidae) from Galls on Douglas-fir Needles1

  • S. F. Condrashoff (a1)
Extract

A detailed morphological study of the immature stages of Contarinia pseudotsugae Condr., C. constricta Condr. and C. cuniculator Condr., along with their description, is presented in this paper. This work is based on examinations of several hundred larvae of each species, with numerous observations of larvae in the act of moulting and pupating which confirmed the morphological indications of three larval instars. Included also is a brief description of the galls associated with each midge species. Terminology used in the larval descriptions follows that of Möhn 1955.

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References
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Metcalfe, M. E. 1933. The morphology and anatomy of the larva of Dasyneura leguminicola Lint. Proc. Zool. Soc. London: 115130.
Möhn, E. 1955. Beitrage zur Systematik der Larven der Itonididae. I. Teil: Porricondylinae und Itonidinae Mitteleuropas. Zoologica, Stuttgart 105: 1247.
Otter, G. W. 1938. On the morphology of the larvae of three species of Cecidomyiidae from knapweed (Centaurea flower). Trans. R. Ent. Soc. London 87: 3968.
Pitcher, R. S. 1955. The larval instars of a group of gall midges of the genus Thomasiana Strand. Proc. R. Ent. Soc. Land., A. 30: 97102.
Williams, F. X. 1910. The anatomy of the larva of Cecidomyia resinicoloides Williams. Ann. Ent. Soc. Amer. 3: 4557.
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The Canadian Entomologist
  • ISSN: 0008-347X
  • EISSN: 1918-3240
  • URL: /core/journals/canadian-entomologist
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