Biological control of leafhoppers Leafhoppers are highly mobile, sap-sucking pests that feed on plant leaves, causing discoloration, stippling and leaf curling. Their feeding reduces photosynthesis, w
General The buckthorn- potato aphid , Aphis nasturtii , has a nearly cosmopolitan distribution and is a major pest of potatoes, where it also transmits viruses. It also attacks a large number of other
General The large raspberry aphid, Amphorophora idaei, is the most important aphid species found on raspberries in Europe. It only feeds on raspberry. Damage symptoms Large raspberry aphids rarely rea
General Acyrthosiphon malvae rogersii is a pest of strawberry that is widely distributed in northern and western Europe. Damage symptoms Wingless aphids may form large colonies on young strawberry fol
General The cottony cushion scale, Icerya purchasi , is considered to have originated in Australia. It was accidentally introduced to California in about 1868 and devastated the citrus industry there
General The codling moth ( Cydia pomonella ) is a notorious, worldwide pest of apple and also occasionally of pear, quince, peach and other fruits. It is very common in Europe. Damage symptoms After i
General The hemispherical or helmet scale, Saissetia coffeae , occurs widely in tropical regions and in greenhouses throughout the world. It is a severe pest in coffee and citrus. Many ornamental crop
General The olive scale, Saissetia oleae , is a cosmopolitan pest of citrus and olives and occurs widely in tropical regions and in greenhouses throughout the world. It is a severe pest in coffee and
General Aspidiotus nerii , the oleander scale or white scale belongs to the Coccoidea and has an almost worldwide distribution. Host plants include olive, apple, mango, palms, oleander and citrus. Dam
General The circular scale, Chrysomphalus aonidum is a tropical species, native to the Oriental region but it has been dispersed widely in tropical and subtropical parts of the world, mostly in associ
