Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract

Some recently established pests of ornamental plants.

Abstract

Pests of ornamental plants that have arrived in the UK during the the past 40 years and that have the most impact on garden plants are presented: sap suckers (Eulecanium excrescens, Stephanitis takeyai, Nezara viridula, Balanococcus diminutus, Pulvinaria hydrangeae [Eupulvinaria hydrangeae], Eupulvinaria hydrangeae, Cacopsylla fulguralis, Macrosiphum albifrons, Frankliniella occidentalis, Eotetranychus fagi and Trioza vitreoradiata), defoliators (Thaumetopoea processionea, Arge berberidis, Chrysolina americana, Agelastica alni, Diaphania perspectalis and Otiorhynchus armadillo), leaf miners (Cheilosia caerulescens, Cameraria ohridella, Phyllonorycter leucographella, Phyllonorycter platani, Phytomyza gymnostoma, Phytomyza hellebori and Phytomyza astrantiae), gall formers (Ophelimus maskelli, Aculops fuchsiae, Contarinia quinquenotata and Dasineura gleditchiae) and climate change pest (Icerya purchasi). Harmonia axyridis is presented as an introduced biological control agent that has out-competed and reduced the populations of some native species in the USA and has potential to be as competitive in the UK.