http://www.omafra.gov.on.ca/english/crops/pub840/p840order.htm

For detailed management and biology for common pests of woody plants, check out the new 2016 edition of OMAFRA publication 840.

It is just being edited for pdf online. In the meantime, you can email our OMAFRA Contact Centre and request a digital copy of the 2016 version at ag.info.omafra@ontario.ca