• Pear psylla

  General The pear psylla, Cacopsylla pyri , is a widely distributed pest of pear in central Europe and can inflict serious damage in pear orchards. Damage symptoms Pear psylla feeding leads to growth i

• Spotted Wing Drosophila

  General Since the start of its invasion in 2008/2009, the spotted wing drosophila, which is originally from Asia, has spread extensively in North and South America and Europe where it has caused sever

• Horse-chestnut leaf miner

  General The horse-chestnut leaf miner, Cameraria ohridella , probably originates from natural stands of the European horse-chestnut in Greece, Albania and Macedonia. It was first observed attacking or

• European red mite

  General As the name implies, the European red mite, Panonychus ulmi , is mainly a pest of fruit trees (apple, pear, plum and cherry). However, it can attack a large scale of other woody plants and is

• Boisduval scale

  General These three species of Diaspi s are very similar in their appearance and damage symptoms. Here, the Boisduval scale is described in more detail, as it is the most important one. The Boisduval

• Crane flies

  General The larvae of crane flies , called leatherjackets, live in the soil and feed on roots and shoots (which they pull into the ground of mainly grasses and cereal crops. The adults do not cause an

• Potato aphid

  General The potato aphid ( Macrosiphum euphorbiae ) is of North American origin, but is these days distributed throughout the world. It is a highly polyphagous species with a preference for Solanaceae

• Woolly apple aphid

  General The woolly aphid, Eriosoma lanigerum , is a serious worldwide apple pest. It is probably of North American origin and has been distributed to other parts of the world mainly via infested apple

• Lyprauta

  General Larvae of the flies Lyprauta cambria, Proceroplatus trinidadensis and Lyprauta chacoensis (family Keroplatidae) have been associated with root damage in potted orchids, especially in greenhous

• Yellow rose aphid

  General The yellow rose aphid , Rhodobium porosum , is probably of North American origin but is now widely distributed in Europe, North Africa, parts of Asia and South America. It attacks plants of th