A method is proposed for rapidly estimating the nymphal population of the Saratoga spittlebug on alternate host plants in young red pine plantations. The method is based on an assumption that the number of nymphs per sample unit is distributed within an infested plantation according to the negative binomial distribution. This method can be 1.1-11.0 times more efficient depending upon the density of plants and the nymphal population level.
Wilson, Louis F. and Hobrla, Sharon L.
"A Procedure for Sampling Nymphs of Saratoga Spittlebug, Aphrophora Saratogensis (Homoptera: Cercopidae), Using Percentage of Sample-Units Infested,"
The Great Lakes Entomologist: Vol. 20
, Article 5.
Available at: http://scholar.valpo.edu/tgle/vol20/iss4/5