Canadian Forest Service Publications
Bibliographical review of Pachypappa tremulae (L.): a root aphid of conifer seedlings in containers. 1987. Lavallée, R. Canadian Forestry Service, Laurentian Forest Research Centre, Sainte-Foy, Quebec. Information Report LAU-X-73E. 16 p.
Issued by: Laurentian Forestry Centre
Catalog ID: 14805
Availability: PDF (download)
Aspen (Populus tremuloides Mich.) is the primary host of the aphid Pachypappa tremulae (L.). As with many other aphid species, part of its life cycle takes place on an alternate host unrelated taxonomically to the primary host. Thus, P. tremulae lives part of its cycle on spruce roots. Although there has been infrequent mention of this insect on conifer roots in the natural environment, P. tremulae seems particularly well adapted to the conditions offered by the roots of seedlings growing in containers. This document seeks to gather together current knowledge of P. tremulae.
Also available under the title:
Revue bibliographique sur Pachypappa tremulae (L.) : un puceron des racines des plants de conifères en récipients (French)