Canadian Forest Service Publications

An extraction method for rapid sampling of eastern hemlock looper eggs, Lambdina fiscellaria fiscellaria (Lepidoptera: Geometridae) 1972. Otvos, I.S.; Bryant, D.G. The Canadian Entomologist 104: 1511-1514.

Year: 1972

Issued by: Pacific Forestry Centre

Catalog ID: 5260

Language: English

Availability: Order paper copy (free)

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Abstract

Soaking shredded moss and birch bark samples in a 2% bleach solution for 45 minutes will release attached hemlock looper eggs. Soaking has no deleterious effect on the hatching of larvae or the emergence of parasites. This technique, in contrast to direct examination, results in a significant increase in the number of eggs obtained and a decrease in counting time. It also permits the development of egg sampling techniques for use over extensive areas and the collection of eggs in large numbers.