Tobacco aphid

matt, never glossy. Winged individuals have a brown-black head and thorax and a reddish abdomen. There is a dark brown spot on the abdomen and several [...] appearance of Tobacco aphid Aphids have a complex life cycle, with both winged and wingless forms of adults and a great variety in colour. When reproduction [...] across the body. The antennae are 0.7-1.0 times the body length, reaching to the siphunculi. The body length is 1.2-2.3 mm.

Codling moth

are brown. The eggs are about 1.3 x 1.0 mm, and whitish opalescent when laid. Later, the developing embryo is visible as a red ring. The larvae are up to [...] appearance of Codling moth The adults have a wing span of 15-22 mm, blackish-brown forewings, suffused with ash-grey and a large, metallic, bronzy black ocellus [...] to 20 mm long, initially whitish and later pale pinkish white, with a brown head and a pale anal plate. The pupa is 8-10 mm long and yellowish brown to dark

Greenhouse whitefly

symptoms The larvae of whitefly need a lot of protein for growth, and thus consume a large quantity of plant sap. This contains a high proportion of sugar, and [...] flattened on the leaf. The fourth larva stadium develops into a white, oval case encircled by a ring of erect waxy rods. This is called the pupa stadium and [...] larger larvae expelling large quantities. The damage that whiteflies cause to a crop is the result of sucking out the sap from the plant leaves and secreting

Broad mite

case of a mild infestation, one can often see brown, frequently collapsed spots, or brown stripes forming a fine network on the leaves. In case of a more [...] latus) are not a serious problem, as they are unable to overwinter. Mites belonging to the family of tarsonemids ( Tarsonemidae ) display a greater diversity [...] discoloured, and with a severe attack, deformed. Extensive damage can be caused by relatively low populations. Frequently, the lower leaves of a plant remain

Oleander scale

oleander scales are a greyish, dirty white or yellowy colour, round in shape, with a scale whose apex is off-centred. This scale resembles a miniature fried [...] fried egg with a diameter of 2 mm. The newly hatched crawlers are roughly 0.3 mm long. They quickly attach themselves to the plant and form a scale. Colonies [...] Colonies mainly form on the underside of leaves. After 1 to 2 months, the female reaches adulthood and begins to lay eggs. An adult female may live for several

False codling moth

surface of the fruit and resemble a saucer-shaped dome. After a few days the eggs hatch and the neonate larvae finds a suitable place to penetrate the fruit [...] the top layer of the soil. The moths emerge after a couple of weeks. The life cycle varies between 5 weeks to 3 months depending on the time of year and [...] green citrus fruit the peel around the penetration hole eventually assumes a yellow colour. On ripe fruit this area is orange, but eventually becomes sunken

Cotton aphid

appearance of Cotton aphid Aphids have a complex life cycle, with both winged and wingless forms of adults and a great variety in colour. In greenhouses [...] or even a green-black colour . This body colour depends on temperature, food source and the density of the population. Large individuals (up to 1.8 mm long) [...] distributed throughout the world but prefers the warmer regions. It has been a pest in European greenhouses since the late 1980’s, particularly affecting

Fall Armyworm

13 to 17 mm in length. The eggs hatch after 3-5 days. Over the next 2 to 3 weeks, the larvae pass through 5-6 stages and the pupal stage takes 9-13 days [...] General The fall armyworm is a polyphagous pest that is indigenous throughout the Americas. Recently, it has been found in Africa too. The caterpillars [...] millet, tomato, potato and cotton. Fall armyworm moths generally disperse in a radius of about 500 km (300 miles) before oviposition, which is sufficient

Tobacco whitefly

symptoms The larvae of whitefly need a lot of protein for growth, and thus consume a large quantity of plant sap. This contains a high proportion of sugar, and [...] and subtropical countries of the world. The original habitat was probably a tropical or subtropical area, possibly Pakistan. The tobacco whitefly ( Bemisia [...] 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

Aphids

length. They have a pear-shaped body with long antennae and two tube-like structures called tubercles on their rear end. Color: Aphids can be a variety of colors [...] ion. They may also excrete a sugary substance called honeydew, which can attract other insects and lead to the growth of a black sooty mold. Aphids life [...] the other. For a large part of the season an aphid population consists of viviparous females. As reproduction is asexual, the progeny of a single female