• Pepper weevil

  during the cooler parts of the day, as this is when they are most active. Another recommendation is to inspect the ground as well as the flowers and immature [...] causing the stalk and calyx to turn yellow before wilting and dropping off. When you see fruit on the ground, it is clear that the crop has been very severely [...] hing feature is a ‘snout’ which is longer than their head and prothorax. Two days after hatching and feeding, they begin to copulate and subsequently lay

• Rose aphid

  presence in the crop. Wingless females of the rose aphid are 1.7-3.6 mm long and green or deep pink to red-brown. The antennae and sometimes the head is dark [...] General The rose aphid, Macrosiphum rosae , is a serious and often abundant pest of roses. It is virtually cosmopolitan and widely spread in Europe. Damage [...] Infestations with rose aphids retard the growth of buds and new shoots. Foliage and flowers are often disfigured and contaminated with sticky honeydew on

• Oleander scale

  Infestations on the leaves and stems may cause wilting and may reduce the photosynthetic area of the plants, leading to lower yield. Damage to fruit occurs [...] themselves to the plant and form a scale. Colonies mainly form on the underside of leaves. After 1 to 2 months, the female reaches adulthood and begins to [...] palms, oleander and citrus. Damage symptoms Scale infestation can be seen by the appearance of the scale armour on stems, leaves and fruits of hosts.

• Horse-chestnut leaf miner

  upper and lower parenchyma. The mine starts to turn yellow and later brown. By this time, the damage is very visible. Eventually the mines may cover the entire [...] up to 3.5 mm in the fourth instar. The pupa is brown and is 2.9-4.5 mm long. The horse-chestnut leaf miner overwinters in the pupal stage in a cocoon in [...] not greatly affected, but when the entire surface of leaves is covered with mines, the leaves start to dry out and fall off. However, total defoliation

• Geranium aphid

  their presence in the crop. Acyrthosiphon malvae rogersii is holocyclic (i.e. they mate in autumn and produce eggs to overwinter) and monoecious (i.e. they [...] General Acyrthosiphon malvae rogersii is a pest of strawberry that is widely distributed in northern and western Europe. Damage symptoms Wingless aphids [...] particularly along the petioles. In outdoor strawberries they reach their peak in June. Winged aphids are formed from May onwards and are responsible for

• European red mite

  initially brown spots on the leaves and when these coalesce the leaves loose colour; this is often referred to as bronzing. When infestation is heavy, leaves can [...] 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 [...] generations in one year. The European red mite overwinters in the egg stage; the “winter eggs” are laid in the wooden parts of the host plants in autumn.

• Large blackberry aphid

  specific the host plant is the simplest method to distinguish these two species. The large blackberry aphid is widely distributed in Europe and also established [...] 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

• Impatiens thrips

  occurs on the leaf rather than on the ground. The prepupae and pupae remain immobile on the leaf tissue. Adults are found on both upper- and undersides [...] patches on leaves and the black dots of their excreta indicate their presence in the crop. The vigour of the plant is reduced by loss of chlorophyll. [...] sweet pepper, cucumber and eggplants. It lives exclusively on the leaves and is often present on weeds in greenhouses. Life cycle and appearance of Impatiens

• Apple rosy aphid

  spurs and smaller branches, and on the base of buds of apple trees. The eggs hatch in spring and at first the aphids attack buds, spur leaves and rosette [...] General The rosy apple aphid, Dysaphis plantaginea , is a serious apple pest. It is widespread in Europe and also occurs in Africa, North and South America [...] with a powdering of white wax. The siphunculi are black and tapered, the cauda is dark, short and triangular. Dysaphis plantaginea lays eggs in autumn in

• Tomato leaf miner

  roughly one hour the larva crawls out of the leaf and falls to the ground. This occurs in the early morning. The larva crawls into the ground to pupate [...] directly and indirectly. The most direct damage is caused by the larvae mining the leaf tissue, leading to desiccation, premature leaf-fall and cosmetic [...] percentage of the larvae remain hanging on the leaf and pupate there, sometimes on the upper surface but more commonly on the underside. The late third instar