Two-spotted spider mite

yellow, and in many plants the damage can also be seen on the upper surface of leaves as small yellow dots. The destruction of cells results in reduced p [...] on the leaves affects the appearance of the crop. This is of particular concern in ornamental crops. Life cycle of two-spotted spider mite Two-spotted [...] to the host plant by feeding on plant sap. They mainly occur on the underside of leaves where they pierce the cells and suck out the contents. The empty

Woolly apple aphid

sheltering in cracks and under loose bark. The nymphs become active in late March or April (in the northern hemisphere) and around the end of May, large [...] apple aphid In contrast to other aphids , the life cycle and survival from year to year of the woolly aphid depends entirely on wingless, parthenogenetic [...] Contrary to the situation in America, South Africa, and Australia, woolly aphid does not infest roots in Europe (except rarely if they occur above the ground)

Spider mites and other mites

and the availability of food. Here's an overview of the life cycle of plant mites: Egg: The life cycle begins with the female mite laying eggs. The eggs [...] are often found in colonies on the undersides of leaves, where they feed on the plant's sap. The damage caused by plant mites can result in discolored or [...] on of the leaves, with the affected areas curling and twisting. This damage is caused by the mites feeding on the plant tissue, which disrupts the growth

Spotted Wing Drosophila

unripe fruits. The larval development takes place in the fruit. The larvae pupate either fully or partly in the fruit, or outside the fruit on the ground. [...] tubes which stick out of the fruit. There are three larval instars and in the third instar the larvae are about 3.9 mm long. The pupae of Drosophila suzukii [...] Larval feeding in the fruit leads to fruit tissue collapse. Even if the fruits have not collapsed, the occurrence of larvae within the fruit makes them

Leek moth

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 the host plant [...] wing span of 15-16 mm. Their general colour is grey-brown with a typical white triangle in the middle of the posterior edge of the forewings. The hindwings [...] hatching, the young larva explores the surface and mines the green leaves. On reaching the third instar, the larva penetrates the young leaves, the flower

Blackcurrant aphid

distal third of the siphunculi is slightly swollen. In spring, the blackcurrant aphid lives on the underside of the young leaves of currant plants. It does [...] appearance of Blackcurrant aphid Aphids have a complex life cycle, with both winged and wingless forms of adults and a great variety in colour. In greenhouses [...] present in the Russian Far East and North America. Damage symptoms Blackcurrant aphids produce large amounts of sticky honeydew on which black sooty mould

Adalia bipunctata

maximum 3 bags per tree The dosage of Aphidalia depends on climate and the size of the trees and should always be adjusted to the particular situation. Start [...] yellowish orange in color. They are typically laid in clusters on the undersides of leaves near prey concentrations. Larval stage: The larvae of Adalia bipunctata [...] aphid infestations without the need for chemical pesticides. The predatory beetle Adalia bipunctata is used for the control of the following pests: Aphids

Brown soft scale

grey in colour, with dark brown speckles or spots. The colour of the scale darkens as the female ages. The size, shape and characteristics of the female [...] cover the leaves, flowers and fruit of the host and reduce photosynthesis and respiration. Life cycle and appearance of Brown soft scale The scale of the [...] appear that they bear live young, but in fact the first instar nymph emerges from the egg under the mother’s scale. The pink crawlers are active for two or

Bugs

their body when at rest. The wings overlap each other exposing the scutellum, a prominent triangular region of the thorax between the wing bases. This dis [...] five nymphal instars and the adult insect. Several species of especially the families Miridae and Pentatomidae are found as pests in agricultural crops. Find [...] extracting nutrients from them, resulting in deformations and puncture holes. The most obvious damage is the deformation of growing points. They also cause tissue

Mottled arum aphid

large amounts of honeydew, which provides an excellent substrate for the growth of black sooty mould. Large areas of mould covering the leaves can reduce [...] continuously producing new generations of females. There is no sexual stage in the life cycle. Wingless females of the mottled arum aphid are shiny whitish [...] green with black cross bands behind the head, broken along the midline, and a large horseshoe-shaped spot on the back of the abdomen. These black markings can