Canadian Forest Service Publications
A method for detecting viral infection in populations of Neodiprion swainei by examination of pupae and adults. 1967. Smirnoff, W.A. The Canadian Entomologist 99(2): 213-216.
Issued by: Laurentian Forestry Centre
Catalog ID: 16015
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Microscopic examinations revealed that free-floating hard black bodies in larvae, pupae and adults of the Swaine jack-pine sawfly, Neodiprion swainei Midd., often contained polyhedra. A simple and rapid method for detecting the presence of the virus infection before gross symptoms appear is described.