Cherry

up north in the Trondheimsfjord region of Norway and in the Caucasus and northern Iran. Cherries even grow in a small and isolated cluster in the western [...] Himalaya. The sweet cherry is regarded as the most important ancestor of today’s cultivated cherry and it is one of two cherry varieties most of the current [...] from. The other variety is the sour cherry Prunus cerasus , which is primarily used for cooking. Every part of the cherry plant, except for the ripe cherries

Apple rosy aphid

base of buds of apple trees. The eggs hatch in spring and at first the aphids attack buds, spur leaves and rosette leaves. Later the infestation spreads to [...] viviparous (wingless) females of the rosy apple aphid are 2.1-2.6 mm long and pink to dark bluish grey, with a powdering of white wax. The siphunculi are black [...] tapered, the cauda is dark, short and triangular. Dysaphis plantaginea lays eggs in autumn in bark crevices on spurs and smaller branches, and on the base

Common cockchafer

years for the larvae to fully develop. The grubs are 10 to 20 mm in the first autumn, 30 to 35 mm by the following autumn, and 40 to 46 mm in the spring of [...] General The cockchafer ( Melolontha melolontha) , also known as the doodlebug or May bug is a European beetle of the genus Melolontha, in the family S [...] symptoms The common cockchafer ( Melolontha melolontha ) does most of its damage in the larval stage, when it feeds on roots of grasses and clover. The adults

Potato aphid

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 fruit sticky [...] characteristic of the potato aphid and is particularly visible in the nymphs. Immatures have a light dusting of whitish-grey wax. The aphids instantly [...] early enough in the season, the death of young plants. Retarded growth and defoliation reduce yield. Plant sap is rich in sugars, but has a low protein content

Tomato leafminer

place in the soil or on the surface of a leaf, in a curled leaf or in a mine. If they leave the mines they build silk cocoons on the leaflets or in the soil [...] cycle and appearance of Tomato leafminer The female moth of the tomato leaf miner ( Tuta absoluta ) lays about 260 eggs. The eggs of the tomato leaf miner [...] mine inside the leaf, stem or fruit. In the second to fourth instars they become greenish with a black band behind the head. The prepupae of the tomato leaf

Box tree moth

Damage symptoms The larvae of the box tree moth ( Cydalima perspectalis ) feed on the leaves of box trees, but can also attack the bark of the trees, causing [...] General The box tree moth ( Cydalima perspectalis ) belongs to the family of Crambidae . It originates in the temperate and sub-tropical regions of East Asia [...] lines at the beginning of pupation and then turn light brown with a dark pattern towards the end of pupation. There are two variants of adults. The most common

Rose aphid

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 in colour. The siphunculi [...] appearance of Rose aphid Aphids have a complex life cycle, with both winged and wingless forms of adults and a great variety in colour. In greenhouses [...] siphunculi are black and bent outwards. The rose aphid usually overwinters on rose bushes in the egg stage, although in mild winter some adults may continue to

Stratiolaelaps scimitus (Hypoaspis miles)

and other soil-dwelling insects. The mites appear in and on the soil and at the base of plant stems. The reduction of the infestation level occurs at a slow [...] insects. The mites appear in and on the soil and at the base of plant stems and offer a sustainable and environmentally friendly alternative to chemical pesticides [...] Hypoaspis miles) is used for the control of the following pests: Thrips Sciarid flies (Fungus gnats) The predatory mites feed on larvae of sciarid flies, thrips

Cryptolaemus montrouzieri

effective in controlling large populations of mealybugs. Once the supply of mealybugs becomes inadequate, the ladybirds fly off in search of new prey. [...] citrus mealybug and the long-tailed mealybug . The predatory beetle Cryptolaemus montrouzieri is used for the control of the following pests: Mealybugs : e.g [...] than 25 second and third instar mealybug nymphs. The larvae of the late third and fourth in stars are the most voracious, consuming up to 30 mealybugs per

Tomato moth

along the posterior edge of the forewing. As in most noctuid moths, the hindwing is greyish and lighter than the forewing, with a darker shadow at the margin [...] oleracea) deposit their spherical eggs on the underside of leaves in groups of 50 to 300, often arranged in layers. The eggs are greenish at first, but gradually [...] y. In fruiting vegetables, large holes can be formed in both green and ripening fruit. The second generation of larvae often causes greater loss of fruit