Tobacco thrips (Frankliniella fusca) is a pest of a wide range of economically important plants, including field crops, vegetables, peanuts and ornamentals. Frankliniella fusca can reproduce sexually or parthenogenetically. The lifecycle is completed in 15-25 days, with development from egg, 2 larval stages, pre-pupa, pupae through to adult. Adult thrips are small (1-2mm) and are brown or black in colour. Adults and larvae feed on new plant growth, with high infestations causing damage through plant disfiguration or growth inhibition. Frankliniella…
S. litura is an important insect pest of cotton. It causes heavy damage to cotton and lowers production. The adult is a dark brown moth with white lines on its wings. However, it is the worm-like young (larvae) that cause the damage. The larva is the size of your small finger and has bright yellow lines on the back and sides of the body. On touching, the larva curls at once and drops. Eggs are laid on the underside…
Besides onion and tobacco it attacks, among others: beans, broccoli, cabbage, carrot, cauliflower, cotton, cucumber, garlic, grapevine, leek, lucerne, melon, papaya, peach, peas, pineapple, potato, red beet, squash, tomato, turnip and many ornamental plants. Thrips tabaci is assumed to be of Mediterranean origin, but is nowadays found worldwide. It reproduces entirely parthenogenetically; males are very rare. The female lays about 30-80 whitish eggs into small gashes in plant tissue that it has cut with its ovipositor. The whole generation…
Sugarcane borer attacks plants in the family Gramineae (grasses). Though principally a pest of sugarcane, this insect also will feed on other crops such as corn, rice, sorghum, and sudangrass. Many wild or weed grasses are suitable hosts. It is native to the Caribbean, Central America, and the warmer parts of South America south to northern Argentina. Overwintering occurs in the larval stage, with pupation in the spring. Adults become active by April or May, and the borer population…
The Citrus red mite (Panonychus citri) is an economically important pest of citrus globally. Although citrus is the main host, it can also infest other fruit trees including pome and stone fruits. Adult mites and their nymphs feed on the fruit, leaves and twigs of the host plant and can cause defoliation, discoloration and reduced quality of the fruits. It is thought that the citrus rust mite originates in Asia, but global transportation of plant stock and ornamental citrus…
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