• Tomato pinworm

  after being laid. The larvae have a yellowish-grayish body, changing to gray with purple spots or completely purple, with a dark brown head. In total, the [...] itself and creating a green pupal cell which darkens to brown before emergence of the adult. The number of days in this instar varies a great deal since it [...] between 8 and 20 days. The total life cycle takes about 26 days at 25°C and 100 days at 13°C. When adults emerge, they are approximately 9 to 12 mm in size and

• Tomato russet mite

  Australia and is a pest in tomatoes in all areas where they are grown. Other members of the plant family Solanaceae may be affected to a lesser extent. Damage [...] The first nymphal stage is a transparent white colour and about 0.1 mm long. They usually develop to the 2nd stage within a day. All life stages look very [...] the contents of plant cells. Affected leaves are slightly curled and acquire a silvery sheen on the underside. Later they become brown and brittle. Badly

• Cotton aphid

  world but prefers the warmer regions. It has been a pest in European greenhouses since the late 1980’s, particularly affecting cucumber. Damage symptoms [...] nutrients from the plant and disturb the balance of growth hormones. As a result, the plant’s growth is retarded giving rise to deformed leaves or, if the infestation [...] 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

• Spider mites and other mites

  of the plant. The number of eggs laid by a single female can vary, and they can hatch within a few days to a couple of weeks, again depending on environmental [...] about What are mites? Plant mites are a diverse group of small arthropods that feed on plant sap. They are found in a wide variety of habitats, from forests [...] Broad mites cause a distinct type of damage known as "bronzing", which can be confused with damage caused by plant viruses. This appears as a bronze or red

• Pea

  vegetable is a bright green colour, sometimes yellow or purple and widely grown as a cool season vegetable crop. Immature peas are consumed as a vegetable [...] This popular vegetable is a round seed in the seed pod of the fruit, Pisum sativum . Pods of this plant develop from the ovary of a pea flower and carry numerous

• Garden chafer

  larval instars, a pupal instar and the adult beetle. Adult garden chafers ( Phyllopertha horticola ) have red-brown slightly hairy wings with a dark edge. The [...] (grubs) have brown heads and whitish bodies, and normally lie in a characteristic 'C-shaped' position. They possess three pairs of legs, of which the middle [...] General The garden chafer ( Phyllopertha horticola ) is a beetle from the Scarabaeidae family. It does most of its damage in the larval stage when it feeds

• Southern European marshland pyralid

  pyralid or European pepper moth (Duponchelia fovealis) is a polyphagous species feeding on a wide range of hosts from 38 plant families. They include [...] which occurs about a week later, the young larva is visible within the egg. The full-grown caterpillars are 20 to 30 mm long and have a creamy white colour [...] threshold varies considerably according to the crop: in begonia and kalanchoë a relatively small population can cause severe damage, whereas roses appear to

• Whitefly

  are typically about 1-2 mm in length. They have a distinctive, triangular shape and hold their wings in a vertical position over their body when at rest [...] engaged for several hours in seeking a suitable place on the leaf where they can feed. Once they have found such a spot, they remain there throughout the [...] of the pupa through a characteristically shaped opening; the pupa splits on the upper surface along pre-existing seams, to create a T-shaped opening. Newly

• Red palm weevil

  legless, pyriform with a brown head and body comprised of 13 segments. Fully grown larvae migrate to the periphery of the palms to build a solid elongated cocoon [...] Africa and Europe with distribution through the Mediterranean since the 1980s. Damage symptoms It is very difficult to recognize the first signs of red palm [...] and feed in the softest and most humid living tissues (growth areas) with a low to moderate proportion of fibres. Their feeding causes deterioration of

• Vine mealybug

  The prepupa and pupa stages are present only in the male. After a complete metamorphosis, a winged male emerges from the pupa. The male is smaller (1 mm) [...] yellowing of leaves, sometimes followed by defoliation. The overall effect is a reduction of photosynthesis and therefore the yield. Flowers and fruit often [...] voluminous, has an elongated oval shape and has no wings. The body is covered with a fine waxy material and have 18 pairs of wax rods round the edge of the body