Section 14
Chapter 13,945

A technique for the extraction of cocoons from soil samples during population studies of the Swaine sawfly, Neodiprion swainei Midd. (Hymenoptera: Diprionidae)

Mcleod, J.M.

Canad. Ent, Ottawa 93(10): 888-890


DOI: 10.4039/ent93888-10
Accession: 013944234

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A washing technique for the extraction of cocoons of Neodiprion swainei (Middleton) from soil samples was devised in Quebec in 1960 and is described. Samples of soil from areas of 1 sq.ft. of the forest floor were placed in containers, made by hinging together two frames 20 in. square placed one on the other, with the top and bottom each consisting of a layer of 14-mesh screen (which retains particles of cocoon size or more) supported by a contiguous outer layer of eight-mesh screen.

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