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Bulletin
Forestry Commission
1922
This bulletin embodies the results of an investigation into the life history of Chermes (Gillettea) cooleyi Gillette, an American species of the family Chermesidae, which has made its appearance upon the Douglas fir in this country. The insect Chermes cooleyi lives partly on the Douglas fir and partly on the Sitka spruce. It is not altogether new to Great Britain, having been observed in the New Forest on Douglas fir in 1913, but reports received in 1919 showed that it was more widely distributed than had been suspected and was apparently spreading.
155 x 250mm | 58 pages | black and white
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Stock code:FCBU004

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