• 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

• Black vine weevil

  instars. Once the temperature rises, the larvae become active again. The full-grown larvae pupate in spring in the soil. The depth where the pupae can be [...] problem in vegetables and fruit crops but reduces the value of ornamental plants. Life cycle and appearance of Black vine weevil The life cycle of the black [...] weevil consists of an egg, 6 or 7 larval instars, a pupal instar and the adult beetle. In temperate climates in the Northern hemisphere, the first adult weevils

• 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

• Shallot aphid

  and shallot, the aphids often occur at the end of the storage period causing malformation of new plants. Life cycle and appearance of The shallot aphid [...] females of the shallot aphid are 1.1-2.2 mm long and shiny brownish green to dirty yellow. Their legs and antennae are pale, apart from the ends of the antennae [...] antennae and the tarsi. The siphunculi are short an swollen towards the apex. The shallot aphid does not alternate to another host plant for overwintering

• Olive scale

  Removal of large quantities of sap debilitate the plant and can cause wilting, desiccation of tissues and dieback. Life cycle and appearance of Olive scale [...] Eggs are protected under the shield until they hatch. The emerging crawlers settle mostly along the main veins on the lower sides of mature leaves. Many young [...] General The olive scale, Saissetia oleae , is a cosmopolitan pest of citrus and olives and occurs widely in tropical regions and in greenhouses throughout

• 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

• Black bean aphid

  caused through the transmission of plant viruses. Infestations start usually at the younger parts of the plant but can spread all over the plant. Nymphs [...] 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 [...] from the plant and disturb the balance of growth hormones. As a result, the plant’s growth is retarded giving rise to deformed leaves or, if the infestation

• Blueberry aphid

  females of the blueberry aphid are pale yellow-green. The siphunculi are long and straight. Blueberry aphids overwinter as eggs on blueberry bushes. The fundatrices [...] blueberries and is a vector of blueberry scorch virus. Damage symptoms Blueberry aphids live in dense colonies on young shoots of blueberry bushes and produce [...] amounts of sticky honeydew. The aphids spread blueberry scorch virus. This virus disease can cause severe yield loss. Life cycle and appearance of Blueberry

• Geranium aphid

  young strawberry foliage, particularly along the petioles. In outdoor strawberries they reach their peak in June. Winged aphids are formed from May onwards [...] complex life cycle, with both winged and wingless forms of adults and a great variety in colour. In greenhouses, reproduction takes place by parthenogenesis [...] generations of females. Aphids moult four times before reaching adulthood. With each moult they shed white skin, betraying their presence in the crop. Ac

• 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