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FPL 16 - Spruce Aphid

The information accessed from this screen is based on the publication: Koot, H. P. 1991. Spruce Aphid. Forestry Canada, Forest Insect and Disease Survey, Forest Pest Leaflet No. 16 4p.

Introduction

The spruce aphid, Elatobium abietinum (Walker) (Homoptera: Aphididae), is a pest of spruce in coastal British Columbia (Fig). Apparently native to B. C., it was first reported here in 1916, but it was known in Europe as early as 1846.

The aphid has been a chronic pest of spruce on the Queen Charlotte Islands and the adjacent mainland since 1960. Infestations have been reported along most coastal areas of the Queen Charlotte Islands and in 1981 more than 5000 ha were severely defoliated. Tree mortality of up to 67% has occurred in spruce stands along the east coast of the islands.

There is probably more than one generation of this insect annually in B. C. Infestations on spruce occur on all tree sizes from saplings to the tallest trees in mature stands. Outbreaks on the coast are usually brief.

For more information, see the Spruce Aphid Forest Pest Leaflet in the Canadian Forest Service bookstore.