Canadian Forest Service Publications

Bionomics and life history of the gall midge Chamaediplosis nootkatensis Gagne & Duncan (Diptera: decidomyiidae) on yellow cypress in British Columbia. 1994. Duncan, R.W. Pan Pacific Entomologist 70(2): 103-112.

Year: 1994

Issued by: Pacific Forestry Centre

Catalog ID: 3547

Language: English

Availability: Not available through the CFS (click for more information).

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The bionomics and life history of the gall midge, Chamaediplosis nootkatensis Gagné & Duncan, on yellow cypress are described including a detailed account of gall formation, seasonal development, parasitoids, host damage and geographic distribution. This gall midge has caused significant seed production losses and defoliation of yellow cypress at a seed orchard on Vancouver Island. The gall midge is univoltine but has two distinct life cycles determined by microclimatic differences within the tree.