Leek moth

Europe. It is also found in some Asian countries and has been introduced to parts of Canada. The larvae of Acrolepiopsis assectella feed on cultivated [...] can occur. On leeks, larvae mine the central leaves which have long, longitudinal grooves when growing. On onion leaves, the larvae feed on the parenchyma [...] Pupation takes place in a 10-mm-long, cream-coloured, silk cocoon made of characteristic meshes spun on the surface of the leaves or on the flower-stalk of

Woolly apple aphid

(without wax covering) on apple trees sheltering in cracks and under loose bark. The nymphs become active in late March or April (in the northern hemisphere) [...] are produced in summer. Winged egg-laying females are produced in early autumn but their eggs do not develop. Contrary to the situation in America, South [...] apple pest. It is probably of North American origin and has been distributed to other parts of the world mainly via infested apple rootstocks. It can occasionally

Yellow rose aphid

their presence in the crop. The yellow rose aphid is holocyclic in North America (i.e. they mate in autumn and produce eggs to overwinter). It is also holocyclic [...] females) and generally found only on cultivated roses and strawberries, in glasshouses in northern Europe or outdoors in warmer climates. Wingless yellow [...] The excess sugar is secreted in the form of honeydew, making the crop and its fruit sticky. Black sooty moulds grow on this honeydew, contaminating fruit

Pea blight, leaf and pod spot

blight, leaf and pod spot Ascochyta pisi hardly survives in the soil or on crop residues because of its poor saprophytic competitiveness and because chlamydospores [...] symptoms Ascochyta pisi causes spots on leaves, stems and pods of peas. The spots on leaves and pods are round, on the stems they are more elongated. The [...] ) causes foot rot in peas, whereas Ascochyta pisi does occur sometimes at the stem base but is not part of the foot rot syndrome in peas. Infected seeds

Buckthorn-potato aphid

body length. The aphids overwinter as eggs on buckthorn. After emerging in spring, the aphids mainly feed on the underside of leaves of their summer hosts [...] cosmopolitan distribution and is a major pest of potatoes, where it also transmits viruses. It also attacks a large number of other crops, for instance sweet [...] cycle, with both winged and wingless forms of adults and a great variety in colour. In greenhouses, reproduction takes place by parthenogenesis, with unfertilized

Cabbage moth

caterpillar varies in colour from green or brown to black. In younger instars, the relatively large head capsule is conspicuous. In older instars, the [...] a highly polyphagous defoliator. Besides being a major cabbage pest, it feeds on 70 plants of 22 families, among them crops such as sweet pepper, tomato [...] beetroot, onion, rhubarb as well as chrysanthemum and carnation. It is a species found in Europe, North Africa (Libya, Canary Islands), Japan and sub-tropical

Silver-Y moth

caterpillar is full-grown, it will form a greenish to black pupa, either in leaves which are woven together with silk threads, or in a suitable hiding place [...] somewhere in greenhouse material. Damage symptoms The larvae feed on leaves, causing typical caterpillar damage. Feeding damage includes feeding on the leaf [...] appears in northern parts of Europe until November, migrating back to southern Europe for the winter months. The moths can fly 2,000 to 2,500 km. In temperate

Hemp russet mite

to the family Eriophyidae (gall and rust mites). It does not produce galls but lives freely (vagrant) on hemp/cannabis plants. Aculops cannabicola is host [...] host specific to hemp/cannabis ( Cannabis sativa ). It cannot survive on other plants. Life cycle and appearance of Hemp russet mite All life stages of the [...] mite develops on the stems and petioles of the hemp plant and can cause stunting. When populations are large, the mites can also be found on the underside

Macrocheles robustulus

robustulus is a species of predatory mite known for its role in biological pest control , particularly in agricultural and horticultural settings. Macrocheles [...] nematodes and other soil living pests, which can be found in high numbers in greenhouses in soil which has been enriched with compost. As natural enemies [...] The predatory mites feed on larvae of sciarid flies , thrips pupae and other soil-dwelling insects. The mites appear in and on the soil and at the base

Ephedrus cerasicola

hole at the rear of the mummy. In practice, mummies are often found on the plant, but also in hidden places such as on ropes, under the rims of the pots [...] cerasicola Development from egg to adult, of Ephedrus cerasicola in Myzus persicae on paprika, lasts 33.7 days at 15°C, about 21 days at 21°C,and 19 days [...] subfamily Aphidiinae. This natural enemy is used for the control of aphids in agricultural and horticultural settings. Ephedrus cerasicola is used for the