• Glasshouse potato aphid

  deformations in the growing tip of the plant. Precisely where the plant is pierced is unimportant. The piercing of the lower leaves in the crop can cause deformed [...] reproduction is asexual, the young aphids are born as developed nymphs. They immediately start to feed on plant sap and grow rapidly. When reproduction is sexual [...] abdomen that has pale to dark transverse bands. The body shape is similar to wingless females, but is 2.0-3.0 mm long. The glasshouse potato aphid manifests both

• Greenhouse whitefly

  and the excess is excreted as honeydew, with larger larvae expelling large quantities. The damage that whiteflies cause to a crop is the result of sucking [...] es: If the population is very large, feeding on plant sap can affect the physiology of the plant, as a result of which growth is retarded. In full sunlight [...] General The greenhouse whitefly ( Trialeurodes vaporariorum ) is one of the major pests of vegetable and ornamental crops in greenhouses throughout the

• Black vine weevil

  approximately 12 mm. A larva is often curled into the typical C-shape which it assumes whenever it is disturbed. The body is covered with stiff white to [...] Outdoors there is a single generation each year. A population of black vine weevils consists entirely of females and reproduction is by parthenogenesis [...] infested plant material. Because Otiorhynchus sulcatus is parthenogenetic a single female is enough to start a new population.

• Tobacco whitefly

  and the excess is excreted as honeydew, with larger larvae expelling large quantities. The damage that whiteflies cause to a crop is the result of sucking [...] es: If the population is very large, feeding on plant sap can affect the physiology of the plant, as a result of which growth is retarded. In full sunlight [...] in (sub-)tropical areas especially. The tobacco whitefly ( Bemisia tabaci ) is feared because of its high level of resistance to many insecticides and its

• Diamond back moth

  xylostella) is suggested to have its origin in Europe, South Africa or East Asia, but is now present wherever its cruciferous hosts exist and it is considered [...] species. It is highly migratory and wind-borne adults can travel long distances to invade crops in other regions. Damage symptoms The caterpillar is a surface [...] pupa is pinkish-white to pinkish-yellow and changes to brown before adult emergence. The adult of the diamond back moth (Plutella xylostella) is slender

• Tomato looper

  family of Noctuidae . It is a tropical and subtropical species originating in the Mediterranean and northern Africa. The larva is highly polyphagous and [...] countries and is now one of the most frequently found pest species in greenhouses. Damage symptoms The tomato looper (Chrysodeixis chalcites) is primarily [...] each other. The hindwings are brown. The body is brown and hairy and, when at rest, the hairy dorsal plume is characteristically distinct. The antennae are

• Long-tailed mealybug

  l regions, but these days it is widespread throughout the world. The range of host plants of Pseudococcus longispinus is less extensive than that of the [...] defoliation. The overall effect is a reduction of photosynthesis and therefore the yield. Flowers and fruit often drop off. Plant sap is rich in sugars, but low [...] the body itself. The length of the other filaments is roughly half the width of the body. The female is 3 - 4 mm long. Reproduction in Pseudococcus longispinus

• RedStar places trust in Natutec Scout

  seeing the trend. Is the level of whitefly infestation staying the same or is it going up or down? I want to see that at a glance. If there is an increasing [...] level of infestation pressure is now visible in easy-to-understand graphs. ‘It's about that line. Is it going up? Down? Or is it staying the same? That's [...] immediately tells you how the level of infestation is developing.’ At RedStar, Jan van Nieuwkerk is responsible for plant protection at the company's six

• House fly

  worldwide long ago as a commensal organism to human populations; the housefly is always found in association with human activity. As the most common species [...] sites to healthy animals and people over large distances. Musca domestica is a confirmed vector for over 100 different pathogens, including viruses (such [...] cycle and appearance of House fly The adult house fly ( Musca domestica ) is 6–7 mm long, yellowish-grey to dark grey in colour, with four narrow black

• Cotton aphid

  General The cotton aphid ( Aphis gossypii ) is an extremely polyphagous aphid found on more than 700 plant species. Crop plants attacked by this aphid [...] plants such as chrysanthemum and kalanchoe. The cotton aphid ( Aphis gossypii ) is distributed throughout the world but prefers the warmer regions. It has been [...] y affecting cucumber. Damage symptoms The cotton aphid ( Aphis gossypii ) is an important vector for viral diseases. This aphid species can transmit more