Western Hemlock Looper

The western hemlock looper is a native defoliator of western hemlock, western redcedar, interior spruce and Douglas-fir.  This insect periodically reaches outbreak levels causing severe damage to forests in both interior and coastal stands in British Columbia.

The Southern Interior Area manages western hemlock looper damage by monitoring populations in susceptible stands and when significant damage is predicted, plans to reduce the impact of the defoliation through targeted aerial spraying using the biological insecticide, Bacillus thruringiensis var. kurstaki (Btk).  

This web site provides background information on the pest and the most current management plans.

western hemlock looper

Last updated on January 28, 2008
The contact for this web page is: kevin.buxton@gov.bc.ca