• Yellow rose aphid

  North Africa, parts of Asia and South America. It attacks plants of the family Rosaceae and is a pest of strawberries and roses. Damage symptoms The yellow [...] strawberries and roses. Life cycle and appearance of Yellow rose aphid Aphids have a complex life cycle, with both winged and wingless forms of adults and a great [...] form of honeydew, making the crop and its fruit sticky. Black sooty moulds grow on this honeydew, contaminating fruit and ornamental crops. At the same time

• Common cockchafer

  ( Melolontha melolontha ) does most of its damage in the larval stage, when it feeds on roots of grasses and clover. The adults feed on the leaves of [...] of trees, mainly on oak, maple, beech and plum. Life cycle and appearance of Common cockchafer The life cycle of the common cockchafer ( Melolontha melolontha [...] a pupal instar and the adult beetle. The adult beetle is 25 to 30 mm long, with a dark head, black pronotum covered with short hairs, and reddish brown

• Pea leaf miner

  variety of vegetable and ornamental crops. It originates from South and Middle America and has subsequently spread via plant material. It is now wide-spread [...] premature leaf-fall and cosmetic damage. In tropical and subtropical areas this can lead to burning in fruit such as tomato and melon. Loss of leaves [...] vegetables and causes problems especially in lettuce grown on open ground. Damage symptoms Leaf miners cause damage to plants both directly and indirectly

• Diamond back moth

  wherever its cruciferous hosts exist and it is considered to be the most universally distributed lepidopteran species. It is highly migratory and wind-borne [...] flower buds, flowers and young seed pods, causing loss of pods and seeds. Life cycle and appearance of Diamond back moth The oval and flattened eggs of the [...] Plutellidae . It only attacks Brassicaceae species, including cruciferous weeds. The diamond back moth (Plutella xylostella) is suggested to have its origin in

• Tomato looper

  Noctuidae . It is a tropical and subtropical species originating in the Mediterranean and northern Africa. The larva is highly polyphagous and feeds on plants [...] brown. The body is brown and hairy and, when at rest, the hairy dorsal plume is characteristically distinct. The antennae are long and thin. The eggs are white [...] the crop, on the lower and upper surfaces of leaves. The caterpillar passes through 6 instars. It has a green head capsule and a yellowish-green body with

• European red mite

  (apple, pear, plum and cherry). However, it can attack a large scale of other woody plants and is occasionally a problem on roses and other ornamentals [...] yellowish red, and more slender and tapered near the hind end. The development from egg to adult goes faster at higher temperatures and takes approximately [...] mite , Tetranychus urticae , it does not produce large amounts of webbing. The eggs are about 0.15 mm in diameter, dark red, and oval with small ridges running

• Tomato leaf miner

  bryoniae) has many host plants and has caused crop damage in many parts of the world, including North Africa, Europe and northern Asia. In warmer regions [...] pepper, lettuce, melon, chrysanthemum and gerbera. Damage symptoms Leaf miners cause damage to plants both directly and indirectly. The most direct damage [...] desiccation, premature leaf-fall and cosmetic damage. In (sub-)tropical areas this can lead to burning in fruit such as tomato and melon. Loss of leaves also

• Green peach aphid

  making the crop and its fruit sticky. Black fungal moulds ( Cladosporium spp.) grow on this honeydew, contaminating fruit and ornamental crops and rendering [...] cucumber and many other greenhouse crops. The aphid may originate from Asia, where its winter-hardy host plant, the peach tree, is native, however it is now [...] vector of viral diseases. It can transmit at least 100 different viruses and is thus rightfully feared by many growers. Nymphs and adults extract nutrients

• Oleander aphid

  Apocynaceae and Asclepiadaceae. It is commonly found feeding on oleander and milkweeds ( Asclepias sp.). The oleander aphid is cosmopolitan, and can be found [...] temperate regions throughout the world. It probably originated in the Mediterranean region, the origin of its principal host plant, oleander. Damage symptoms [...] Life cycle and appearance of Oleander aphid The oleander aphid is an obligate parthenogenetic species; thus the adult aphids are all female and males do

• Spotted Wing Drosophila

  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 [...] Europe where it has caused severe yield losses in many berry crops, cherries and grapes. Damage symptoms After oviposition, the respiration tubes extend from [...] to secondary pathogens (e.g. bacteria, fungi and yeasts). Finally, deterioration of fruit can increase its susceptibility to attack by other Drosophila