European red mite

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. [...] and appearance of European red mite The European red mite feeds mainly on the undersides of leaves but moves to upper leaf surfaces when the lower side becomes [...] spots (tubercles) at the base of the hairs; males are about 0.3 mm long, yellowish red, and more slender and tapered near the hind end. The development from

Boisduval scale

tissue at the feeding site. In orchids, this scale tends to prefer the leaf midrib and the portion of the petiole that is covered by the sheath. Small infestations [...] be a pest of orchids, palms, pineapples, bananas and many other plants. Damage symptoms The first sign of Boisduval scale is the presence of the scales on [...] cast skins of the nymph form a light yellow spot near the centre of the scale called the exuvium. Adult females can produce up to 200 eggs and live up to

Cabbage moth

accumulates in the heart of cabbage, thereby lowering the commercial value of infested crops. Life cycle and appearance of Cabbage moth The adult cabbage [...] to black. In younger instars, the relatively large head capsule is conspicuous. In older instars, the lighter colour of the bands between the body segments [...] from their pupae the female moths lay clusters of 20 to 100 eggs on the underside of leaves or elsewhere within the greenhouse structure. The eggs are initially

Silver-Y moth

roof-like above the body. The female lays up to 2,000 eggs on the underside of the leaves of their host plant, usually separately but sometimes in small groups [...] leaves, accumulation of frass and destruction of growing points. Life cycle and appearance of Silver-Y moth The forewings of the silver-Y moth ( Autographa [...] characteristic feature of this caterpillar is the oscillatory swaying movement of the anterior end. The caterpillars are nocturnal. When the caterpillar is full-grown

Large raspberry aphid

Overwintering eggs of the large raspberry aphid are laid near the base of vegetative canes and hatch in spring. After emerging in spring, the aphids mainly [...] direct feeding damage. The major problem is the spreading of various raspberry viruses by the aphids. Life cycle and appearance of Large raspberry aphid [...] General The large raspberry aphid, Amphorophora idaei, is the most important aphid species found on raspberries in Europe. It only feeds on raspberry.

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

Broad mite

to the damage caused by viruses. The typical pattern of damage consists of malformation and distortion of the above-ground growth of the plant. The mites [...] General The broad mite (Polyphagotarsonemus latus) occurs in the tropics and in greenhouses in temperate regions. The broad mite (Polyphagotarsonemus latus) [...] appearance of Broad mite The life cycle of tarsonemid mites has the following stages: egg, larva, and adult. The larvae have three pairs of legs, adults

Pea leaf miner

quantity of foliage can get damaged before the harvest is affected. The size of a leaf tunnel depends on the stage of development of the leaf, the species [...] to the ground. This occurs in the early morning. The larva crawls into the ground to pupate. A small percentage of the larvae remain hanging on the leaf [...] pupating, the grown larva cuts a sickle-shaped exit hole in the leaf with its mouth parts. After roughly one hour the larva crawls out of the leaf and falls

Municipality Doetinchem: Entonem nematodes managing oak processionary caterpillar

that the use of nematodes helps to reduce the level of infestation. ‘By using Entonem and extracting the nests as a curative measure, we can keep the situation [...] for now. In the longer term, improving biodiversity will have an important role to play – breaching the monocultures of the oak and stimulating the natural [...] oak trees in the forests and plantations around Doetinchem. Marc van Rijswijk is the spokesman for Buha, the implementing organization for the Municipality

Circular scale

subtropical parts of the world, mostly in association with the citrus industry. In more northern countries of its range, it occurs in greenhouses. In addition to [...] humid environments. In citrus, it tends to prefer the lower and central parts of mature trees. Circular scale prefers the leaves, but in high infestations [...] spots with paler margins, on both surfaces of shaded leaves of the host plant. Life cycle and appearance of Circular scale Female nymphs and adults have