Beetles

orders and displays an enormous variety of form, size and habit. A number of species are a serious pest in crops or stored products. There are many useful [...] aphids . Beetles undergo a complete metamorphosis, that is, the larvae do not resemble the adult at all, and must pass through a pupal instar before reaching [...] The pupae do not make a cocoon and will already display many similarities with the adults. The adult beetles usually possess a pair of membranous wings

Thrips

larval instars, a pre-pupa and a pupal instar, and finally the adult insect. The eggs are kidney-shaped and have a white or yellow shell. Before a female deposits [...] Thrips are small insects (0.5-14 mm), with the largest species found in the tropics. In temperate regions they are not larger than 2.5 mm. All thrips species [...] in length. They have a distinctive elongated shape, with long, narrow wings that are fringed with fine hairs. Color: Thrips can be a variety of colors, depending

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 [...] 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

Aphids

have been described, and they can be found in a variety of habitats throughout the world. Aphids form a single, very large group of insects: the super- [...] 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

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

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 [...] shares similar habits. Due to the initial damage of the larva which forms a mine, it can be confused with the eggplant leafminer (Gnorimoschema glochinella)

Tomato russet mite

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 [...] 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 [...] creamy white but turn to a patchy yellow as they age. The mites have two nymphal stages: sometimes they are also called larva (1st stage) and nymph (2nd

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

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

Asian citrus psyllid

citri ), is an important pest of citrus in several countries as it is a vector of a serious citrus disease called greening disease or Huanglongbing. It is [...] disease is spread when adults fly to a healthy plant and injects bacteria into it as they feed. The disease can kill a citrus tree in as little as five years [...] most affected area by the vectored disease. Damage symptoms The psyllid is a sucking insect that inserts its mouthparts into plant tissue to feed. Adults