Glasshouse potato aphid

sexual, the aphids lay eggs that overwinter. In greenhouses reproduction also takes place by parthenogenesis, with unfertilized viviparous females continuing [...] of darker bands, and their length exceeds that of the body. The legs are also long, there are two distinctive dark green spots on the abdomen at the base [...] the same host plant. The aphid can overwinter not only in greenhouses, but also outdoors in sheltered places.

Sciarid flies

organic remains and the fungi that grow on them, although some species can also eat living plant material. The adults prefer humid habitats and are attracted [...] plant material and on algae and fungi present in the soil. They, however, can also feed on root hairs, rootlets, and tender root, stem and leaf tissue. Later [...] Later instars may even feed on plant stems. The injuries caused by feeding also provide invasion routes for various pathogenic fungi. Because the larvae move

Potato aphid

species with a preference for Solanaceae (particularly potato), but has also been identified on more than 200 plant species from more than 20 families [...] sexual, the aphids lay eggs that overwinter. In greenhouses reproduction also takes place by parthenogenesis, with unfertilized viviparous females continuing [...] cornicles, long legs, and a long cauda. Adults are usually green, but may also be pink or red (especially in tomato), depending on the food source. Even

Hemp russet mite

hemp plant and can cause stunting. When populations are large, the mites can also be found on the underside of leaves. This results in smaller leaf size and [...] stages: egg, two nymphal stages and adult. The nymphal stages are sometimes also called larva (1st stage) and nymph (2nd stage). The eggs are approximately

American serpentine leaf miner

leaf miner ( Liriomyza trifolii ) originates from North America, but occurs also in Europe since about 1976. The American serpentine leaf miner ( Liriomyza [...] this can lead to burning in fruit such as tomato and melon. Loss of leaves also reduces yield. In full-grown plants of fruiting vegetable crops, however [...] older larvae make wider tunnels. Feeding spots made by adult females can also reduce yield, although except with ornamental crops, this is usually of less

Leaf miners

this can lead to burning in fruit such as tomato and melon. Loss of leaves also reduces yield. In full-grown plants of fruiting vegetable crops, however [...] older larvae make wider tunnels. Feeding spots made by adult females can also reduce yield, although with the exception of ornamental crops, this is usually [...] method and the susceptibility of the host plant. This susceptibility can also vary considerably from one cultivar to another. Indirect damage arises when

Shore fly

Frass deposited on leaves or flowers in ornamental crops, lettuce and herbs also causes cosmetic damage, and sometimes this can occur on such a scale that [...] 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 5 mm long, and stout with

Neoseiulus californicus

spider mites . Although Neoseiulus californicus prefers spider mites it can also feed on other food sources such as other mites, thrips or pollen. This predatory [...] including Two-spotted spider mite (Tetranychus urticae) . The predatory mite can also feed on other food sources such as other mites, thrips or pollen. Feeding [...] predator of Tetranychid mites, i.e. it prefers to feed on spider mites but can also feed and survive on other prey, including other mites, thrips or pollen.

Downy mildew of Cucurbits

symptoms Downy mildew pathogens infect mostly the leaves but occasionally also stems and fruits. They cause lesions on the upper leaf surface, bordered

Thrips

This can result in distorted growth, discoloration, or scarring. They may also transmit plant viruses. Recognize thrips larvae Thrips larvae are usually [...] desiccated and the adjacent cells turn brown. The vigour of the plant is also reduced by loss of chlorophyll. With a serious infestation the leaves themselves [...] damaged, while leaves are often damaged and become misshapen. Thrips are also responsible for the transmission of viruses, the best known of which is tomato