International trade and movement of people are largely responsible for increasing numbers
of non-native insect introductions to new environments. For forest insects, trade in live plants …

Leafminers are a taxonomically diverse group of endophagous insects. A number of them
are pests in forestry, horticulture and agriculture, and some of them have become important …

Symptoms of beech leaf disease (BLD), first reported in Ohio in 2012, include interveinal
greening, thickening and often chlorosis in leaves, canopy thinning and mortality …

Global trade continues to increase in volume, speed, geographic scope, diversity of goods,
and types of conveyances, which has resulted in a parallel increase in both quantity and …

Native and nonnative insects and diseases can result in detrimental impacts to trees and
forests, including the loss of economic resources and ecosystem services. Increases in …

In Canada, forest biosecurity is primarily under federal jurisdiction as the federal government
is the signatory to the International Plant Protection Convention and other international trade …

The beech leaf-mining weevil, Orchestes fagi (L.), is native to Europe where it commonly
attacks European beech. The weevil was discovered infesting American beech in Halifax …

The beech leaf-mining weevil, Orchestes fagi, is a common pest of European beech, Fagus
sylvatica, and has recently become established in Nova Scotia, Canada where it similarly …

Transporting firewood can spread plant pests such as the emerald ash borer, Agrilus
planipennis Fairmaire (Coleoptera: Buprestidae), which was discovered in Lower Michigan …

The beech leaf‐mining weevil, O rchestes fagi L.(C urculionidae: C urculioninae: R
hamphini), a pest of European beech, F agus sylvatica L.(F agaceae), was recently …