• Yellow rose aphid

  outdoors in warmer climates. Wingless yellow rose aphids have a brownish head; the body is bright yellow to yellow-green or green and rather shiny. Winged [...] production. The yellow rose aphid is also a vector of several viruses attacking strawberries and roses. Life cycle and appearance of Yellow rose aphid Aphids [...] General The yellow rose aphid , Rhodobium porosum , is probably of North American origin but is now widely distributed in Europe, North Africa, parts of

• Two-spotted spider mite

  empty dead cells become yellow, and in many plants the damage can also be seen on the upper surface of leaves as small yellow dots. The destruction of [...] more pointed at the rear. Colour is very variable: from light yellow or orange to dark yellow or brown.The colour of the adults often depends on the crop [...] transpiration and reduced plant growth. As damage increases, whole leaves turn yellow, and as more cell sap is removed, the leaf, and eventually the whole plant

• Potato/tomato psyllid

  damage, caused by potato psyllid nymphs when feeding, is known as ‘psyllid yellows’, which results in delayed growth, weakness in the new leaves, chlorosi [...] problems caused. Psyllids spread purple-top disease in potatoes and permanent yellowing disease in tomatoes, both of which are very harmful to the affected crops [...] of the potato/tomato psyllid The eggs are egg-shaped with a bright orange-yellow colour. They are attached to a strand which connects them to the surface

• Glasshouse potato aphid

  piercing by the aphids are visible in lower leaves in the form of yellow patches. Heavy yellowing may even be followed by defoliation. Life cycle Glasshouse potato [...] squat, of medium size (1.8 - 3.0 mm long) and oval in shape. It has a light yellow-green to brown-green colour, and has an overall shiny appearance. Antennae [...] on the abdomen at the base of the cornicles. Alate (winged) females are yellow-green, with a brown head, a dark thorax and a dark abdomen that has pale

• Tobacco whitefly

  irregular ripening in tomatoes and sweet peppers, yellowing of the flower stalks in gerbera, and serious yellowing of the leaves of French beans. Other symptoms [...] stadia remain flattened on the leaf. The fourth larva stadium develops into a yellow, almost circular so called pupa, in which the red eyes and white wings of [...] greenhouse whitefly ( Trialeurodes vaporariorum ), but is slightly smaller and yellower. More distinctively, the wings of the tobacco whitefly ( Bemisia tabaci

• Lyprauta

  brown head with short antennae. The thorax is brownish-yellow and the abdomen brown with yellow stripes. The wings are transparent light brown with clearly [...] long slender body. The head is brown or reddish. The pupae are white to yellow and embedded in a dense web. Adult flies are long and slender and have a

• Tarnished plant bug

  brown with yellow, orange or red accents, but their colouring can range from pale yellow with few dark accents to almost completely black with yellow markings [...] dimpling; Seeds darken and collapse or shrink; Terminal plant growth is yellowed and distorted; Plants develop split-stem lesions; Nodes swell and internodes

• Apple

  cultivated, each with their own characteristics. Ripe apples usually have a red, yellow, green, pink, or russetted coloured skin. Additionally there exists also [...] yellowish-white coloured exocarp. Sometimes their flesh is also pink or yellow.

• Chafers

  are not harmful. Damage symptoms Larval feeding on the roots can lead to yellowing and wilting of plants. Damage can be severe on young plants and especially [...] to feed on roots. The larvae are white-coloured, C-shaped grubs, with a yellow-brown head, and up to 30 mm long when fully grown. Larval development takes

• Horiver Wetstick

  Wetstick for trapping and monitoring of different flying insects. Pests Yellow: whitefly , thrips , fungus gnats, leaf miners Blue: thrips Black: Tuta [...] Polysterene cards coated with wet sticky glue. Available colours and sizes Yellow: 10x25 cm; 20x25 cm; 25x40 cm Blue: 10x25 cm; 20x25 cm; 25x40 cm Black: [...] absoluta use at least one Horiver Wetstick trap per 100 m 2 Combined use Yellow Horiver Wetstick can be used in combination with Natutec Scout for easy