A Technical Report from The Bartlett Tree Research Laboratories
Small sap feeding insects common and widespread in Britain and northern Europe. In the UK a wide range of plants are attacked to include houseplants, greenhouse plants and many fruit and ornamental trees growing outdoors. There are more than 25 species of scale insect in the UK. The most widespread and troublesome scale species of trees include horse-chestnut, (Pulvinaria regalis) and beech scale, (Cryptococcus fagisuga).