• False spider mites

  flat compared to other mites. Most species that cause damage to cultivated plants belong to the genera Brevipalpus and Tenuipalpus . The most common species [...] found on the underside of leaves where they cause a brown, scabby discolouration spreading from both sides of the main vein into the leaf blade. The damage [...] damage often leads to premature ageing of the plant. In some crops, plants can become misshapen, presumably because the mites secrete a substance while feeding

• Cotton aphid

  therefore need to extract large quantities of sap to get sufficient protein. The excess sugar is secreted in the form of honeydew, making the crop and its [...] including the cucumber mosaic virus. Nymphs and adults extract nutrients from the plant and disturb the balance of growth hormones. As a result, the plant’s [...] plant’s growth is retarded giving rise to deformed leaves or, if the infestation occurs early enough in the season, the death of young plants. Retarded growth

• Green peach aphid

  from the plant and disturb the balance of growth hormones. As a result, the plant’s growth is retarded giving rise to deformed leaves or, if the infestation [...] therefore need to extract large quantities of sap to get sufficient protein. The excess sugar is secreted in the form of honeydew, making the crop and its [...] different families. Damage symptoms Of all the aphids , the peach potato aphid ( Myzus persicae subsp. persicae ) is the most important vector of viral diseases

• Pine processionary moth

  but also during the following summer because of the persistence of allergenic hairs in the remains of winter nests The larvae of the Pine processionary [...] tic dark spot in the anal region. The cylindrical egg masses range in length from 4 to 5 cm. They are covered with the scales of the female anal tuft, [...] mimics the pine shoots. The larvae develop through five instars and the full-grown caterpillar is about 40 mm in length. The head capsule is black. The body

• Tomato looper

  instead of the normal five and therefore the caterpillar moves with the same looping motion as an inchworm (geometrid). The cocoon is usually attached to the [...] Older instars eat through the leaves, which make them appear skeletonized. The last two instars may eat the entire leaf except for the midrib or other large [...] white marks on the forewing that sometimes overlap each other. The hindwings are brown. The body is brown and hairy and, when at rest, the hairy dorsal plume

• Cabbage moth

  dusk, hiding in the crop during the day. Several days after emerging from their pupae the female moths lay clusters of 20 to 100 eggs on the underside of [...] brown to black. In younger instars, the relatively large head capsule is conspicuous. In older instars, the lighter colour of the bands between the body [...] instar larvae of the cabbage moth (Mamestra brassicae) are gregarious, eating the edge of the leaves on which they were laid. From the third instar onwards

• Large blackberry aphid

  host specific the host plant is the simplest method to distinguish these two species. The large blackberry aphid is widely distributed in Europe and also [...] siphunculi. The cauda is short and triangular. The aphids overwinter as eggs on blackberry plants. After emerging in spring, the aphids mainly feed on the underside [...] General The large blackberry aphid, Amphorophora rubi , is very similar to the large raspberry aphid Amphorophora idaei . As both aphid species are host

• Garden chafer

  females that stay close to the ground. Females start to deposit eggs into the soil at a depth up to 5 cm soon after mating. The eggs elongate at laying [...] Garden chafer The life cycle of the garden chafer ( Phyllopertha horticola ) has the following stages: egg, 3 larval instars, a pupal instar and the adult beetle [...] of which the middle and hind pairs are approximately the same length. Pupation takes place around March or April. The pupae are cream-coloured to light brown

• Pear psylla

  and orange red to blackish. They have white, longitudinal stripes on the back of the thorax. Their forewings are clear with dark veins. The eggs are oval [...] markings on the head and body. Pear psyllas overwinter as adults, sheltering on the bark of pear trees. The adults become active in spring and start to feed on [...] generation nymphs turn brown and die. Feeding later in the season may affect the harvest of the next year by weakening or killing fruit buds. Pear psyllas

• Large raspberry aphid

  that are high enough to reduce yield by direct feeding damage. The major problem is the spreading of various raspberry viruses by the aphids. Life cycle [...] in spring, the aphids mainly feed on the underside of leaves and start to reproduce parthenogenetically. They are very mobile and drop from the plant when [...] skin, betraying their presence in the crop. Wingless females of the large raspberry aphid are 2.6-4.1 mm long, pale to yellowish green with long antennae