Excerpt from Sampling Low Density Populations of the Douglas-Fir Tussock Moth by Frequency of Occurrence in the Lower Tree Crown The first criterion of standard

A sequential sampling plan is described for identifying tussock moth populations which, at a maximum expected rate of increase, could be within 1 year of outbre

Procedures for monitoring larval populations of the Douglas-fir tussock moth and the western spruce budworm are recommended based on many years experience in sa