• Yellow rose aphid

  Nymphs and adults extract nutrients from the plant and disturb the balance of growth hormones. As a result, the plant’s growth is retarded giving rise to [...] quantities of sap to get sufficient protein. The excess sugar is secreted in the form of honeydew, making the crop and its fruit sticky. Black sooty moulds [...] ng fruit and ornamental crops. At the same time, photosynthesis in the leaves is reduced, affecting production. The yellow rose aphid is also a vector

• Pear psylla

  generation nymphs turn brown and die. Feeding later in the season may affect the harvest of the next year by weakening or killing fruit buds. Pear psyllas [...] They have white, longitudinal stripes on the back of the thorax. Their forewings are clear with dark veins. The eggs are oval, approximately 0.3 mm long [...] stripes and blackish markings on the head and body. Pear psyllas overwinter as adults, sheltering on the bark of pear trees. The adults become active in spring

• Circular scale

  under the scale. Eggs hatch under the scale and the crawlers walk about to find a suitable feeding site before settling to a sessile lifestyle. The second-instar [...] point which is sometimes pale. When the scale is lifted, the insect beneath is yellow and up to 1.7 mm long. The adult male is 0.7 mm long and has a single [...] General The circular scale, Chrysomphalus aonidum is a tropical species, native to the Oriental region but it has been dispersed widely in tropical and

• Large blackberry aphid

  siphunculi. The cauda is short and triangular. The aphids overwinter as eggs on blackberry plants. After emerging in spring, the aphids mainly feed on the underside [...] host specific the host plant is the simplest method to distinguish these two species. The large blackberry aphid is widely distributed in Europe and also [...] General The large blackberry aphid, Amphorophora rubi , is very similar to the large raspberry aphid Amphorophora idaei . As both aphid species are host

• Shore fly

  Shore fly The life cycle of the shore fly ( Scatella tenuicosta ) has the following stages: egg, three larval instars, a pupa and the adult fly. The eggs are [...] translucent and their body is cylindrical. The larvae are found in the top layer of damp soil, where they also pupate. The adult shore fly is black, about 4 to [...] and stout with short antennae and short legs. The head of the adult has a pair of conspicuous eyes. The wings have grey-brown patches. Although shore flies

• Beetles

  pupal instar before reaching the adult stage. Larvae have biting mouthparts and mostly feed on the same food as the adults. The pupae do not make a cocoon [...] ladybirds contribute to the control of aphids . Beetles undergo a complete metamorphosis, that is, the larvae do not resemble the adult at all, and must [...] already display many similarities with the adults. The adult beetles usually possess a pair of membranous wings beneath the wing covers. Many species are very

• Buckthorn-potato aphid

  barely exceed half the body length. The aphids overwinter as eggs on buckthorn. After emerging in spring, the aphids mainly feed on the underside of leaves [...] their presence in the crop. Wingless females of the buckthorn- potato aphid are 1.1-2.4 mm long and bright pale green to yellowish green. The antenna are relatively [...] usually found in the lower parts of the plants and are not very mobile. In autumn, winged males and females are produced, which return to the primary host

• Olive scale

  is. 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 [...] surfaces. The honeydew may attract attendant ants and sooty moulds grow on the sugary deposits. Removal of large quantities of sap debilitate the plant and [...] General The olive scale, Saissetia oleae , is a cosmopolitan pest of citrus and olives and occurs widely in tropical regions and in greenhouses throughout

• Flies

  directly and indirectly. The type of damage depends on the species of the flies. Direct damage is the immediate result of larvae feeding on root hairs and [...] growing conditions. Solutions for fly control Learn more about The adult form of the onion fly Delia antiqua What are flies? There are several flies that [...] nuisance, are particularly small flies of the families Sciaridae ( sciarid flies ) and Ephydridae (shore flies). The larvae of these insects generally live

• Oleander scale

  Scale infestation can be seen by the appearance of the scale armour on stems, leaves and fruits of hosts. Infestations on the leaves and stems may cause wilting [...] mm. The newly hatched crawlers are roughly 0.3 mm long. They quickly attach themselves to the plant and form a scale. Colonies mainly form on the underside [...] General Aspidiotus nerii , the oleander scale or white scale belongs to the Coccoidea and has an almost worldwide distribution. Host plants include olive