Tomato moth

along the posterior edge of the forewing. As in most noctuid moths, the hindwing is greyish and lighter than the forewing, with a darker shadow at the margin [...] formed, which gradually turns a glossy black. The moths are nocturnal, hiding during the day in fissures in the ground, and are often only seen when they are [...] margin. The antennae are long and thin. Head and thorax are reddish-brown while the abdomen is a lighter grey-brown. The females of the tomato moth (Lacanobia

Boisduval scale

1.2-2.2 mm in diameter and circular or oval. The cast skins of the nymph form a light yellow spot near the centre of the scale called the exuvium. Adult [...] very similar in their appearance and damage symptoms. Here, the Boisduval scale is described in more detail, as it is the most important one. The Boisduval [...] tends to prefer the leaf midrib and the portion of the petiole that is covered by the sheath. Small infestations on orchids cause extensive discolouration

Tomato leafminer

place in the soil or on the surface of a leaf, in a curled leaf or in a mine. If they leave the mines they build silk cocoons on the leaflets or in the soil [...] mine inside the leaf, stem or fruit. In the second to fourth instars they become greenish with a black band behind the head. The prepupae of the tomato leaf [...] Damage symptoms The most distinctive symptoms of damage done by the tomato leaf miner ( Tuta absoluta) are the blotch-shaped mines in the leaves. Caterpillars

Aphids

damage to plants in several ways, and the damage can vary depending on the species of aphid and the type of plant being attacked. The following are common [...] throughout the world. Aphids form a single, very large group of insects: the super- family Aphidoidea, belonging to the order Hemiptera . The aphids discussed [...] and flowers by piercing the plant tissue and sucking out the sap. This can result in stunted growth, curling or distortion of the leaves, yellowing, or

Greenhouse whitefly

influence the development of fruit and lead to a reduction in yield. The honeydew deposited on fruit makes it sticky. Dirt adheres to the fruit, and the growth [...] This is called the pupa stadium and these pupae are found on the oldest leaves. The adult emerges from the pupa via a T-shaped fissure. The adult whiteflies [...] General The greenhouse whitefly ( Trialeurodes vaporariorum ) is one of the major pests of vegetable and ornamental crops in greenhouses throughout the world

Pear psylla

first 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 [...] stripes on the back of the thorax. Their forewings are clear with dark veins. The eggs are oval, approximately 0.3 mm long and yellowish orange in colour. [...] 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 and start

Bugs

their body when at rest. The wings overlap each other exposing the scutellum, a prominent triangular region of the thorax between the wing bases. This dis [...] five nymphal instars and the adult insect. Several species of especially the families Miridae and Pentatomidae are found as pests in agricultural crops. Bug [...] extracting nutrients from them, resulting in deformations and puncture holes. The most obvious damage is the deformation of growing points. They also cause

Common cockchafer

years for the larvae to fully develop. The grubs are 10 to 20 mm in the first autumn, 30 to 35 mm by the following autumn, and 40 to 46 mm in the spring of [...] General The cockchafer ( Melolontha melolontha) , also known as the doodlebug or May bug is a European beetle of the genus Melolontha, in the family S [...] symptoms The common cockchafer ( Melolontha melolontha ) does most of its damage in the larval stage, when it feeds on roots of grasses and clover. The adults

Cottony cushion scale

months. After leaving the egg sac, the crawlers settle along the midribs and veins of the leaves. The next two instars migrate to the larger twigs and branches [...] depletion; the shoots dry up and die, and defoliation occurs. In addition, the copious quantities of honeydew produced by the scales coat the leaves, blocking [...] running lengthwise over the surface. The ovisac may reach the same length as the body, giving an overall combined length of up to 20 mm. The 'females' are actually

Oleander aphid

rather than eggs and that the progeny are clones of the adult female. The nymphs feed in colonies on the shoots at the top of the plant. Nymphs progress through [...] sp.). The oleander aphid is cosmopolitan, and can be found in tropical to warm temperate regions throughout the world. It probably originated in the Med [...] General The oleander aphid, Aphis nerii , sometimes also called the milkweed aphid, is a common pest of several important ornamental plants in the families