Screening spruce for white pine weevil resistance

Distribution of P. strobi in North America

Distribution of P. strobi in North America

The White pine weevil, Pissodes strobi Peck (Coleoptera: Curculionidae), is the most serious and economically important native insect pest of spruce and pine regeneration in Canada. Distributed across Canada and the USA, this insect was first described in 1817 by W. D. Peck, a professor at Harvard University.

P. strobi

In British Columbia and Alberta, the weevil primarily attacks Sitka spruce (Picea sitchensis (Bong.) Carr.), White spruce (P. glauca (Moench) Voss), and Engelmann spruce (P. engelmannii Parry). Black spruce (P. mariana (Mill.) B.S.P.), Norway spruce (P. abies (L.) Karst), and occasionally Lodgepole pine (Pinus contorta Dougl. var. latifolia Engelm.) are also susceptible. This preference for spruce has caused this insect to be referred to as the "spruce weevil" in western Canada.

In eastern Canada, the weevil can be found on White pine (Pinus strobus L.), Red pine (P. resinosa Ait.), Jack pine (P. banksiana Lamb.), Scots pine (P. sylvestris L.0), White spruce, Red spruce (P. rubens Sarg.), Black spruce, Norway spruce and Colorado Blue spruce (P. pungens Engelm). In eastern Canada and the USA, it is considered that pure plantations of White pine and later Norway spruce have led to significant increases in weevil population over the last century.

Project status

  • On-going

Team members