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Symptoms of damage •Grub tunnels in the sapwood on the trunk or branches •Grub bore into the sap wood and macking irregular tunnels. •Feeding the vascular tissues •interruption of nutrient and water transport on the tissue •Drying of terminal shoot in early stage •Frass comes out from several points and some times sap oozes…
•Distribution : india, Pakistn, Myanmer, malaysia, china, formosa, japan, east africa, australia & the hawaiian island. •Host plant : musk melon and other cucurbits & also found tomato, chillis, guava, citrus, pear, fig, cauliflower etc. •Only the maggots cause damage by feeding on near ripe fruits. Identification •Maggots : lrgless and headleas,dirty white wriggling creatures….
•Distribution and Status : India, Pakistan, South-East Asia, Malaysia, Indonesia, Formosa, Philippines, Australia, China, Hawaii Islands, China and Taiwan. •Host range : Mango, guava, peach, apricot, cherry, pear, ber, citrus, banana, papaya, avocado, passion fruit, coffee, melons, jack fruit, strawberry. Symptoms of damage •Damage is caused by grub only and feed on pulp. •Maggot…
•Distribution and Status: America, India, Pakistan, Vietnam, Japan, Sri Lanka, Philippines, Indonesia and China •Host range: Citrus, certain deciduous plants and families of rutaceae. Symptoms of damage • Both nymphs and adults suck sap from the plants and injection of toxic saliva •Nymphs – are more destructive, crowd on the terminal shoots, buds and tender…
•Desterbution : India, Malaysia, Indonesia, and Formosa. •No alternative host plant Symptoms of damage •Nymphs and adults suck the sap of inflorescence •Withering •Shedding of flower buds and flowers •Presence of honey dew secrecation on lower leaves and development of sooty mould. •Clicking sound – movement of jassids amidst leaves. •Hoppers provide shelter…
•Distribution : Africa, Japan •Hoat plant : citrus & Various other species of the family rutaceae. Identification •Egg : pale or greenish yellow when freshly laid, but later turn brown, becoming dark gary just before hatching. – Female lay eggs : 75 – 120 •Caterpillar : full grown caterpillar is yellowish green, horn – like…
•Distribution and status: World wide •It is polyphagous pest •it is serious pest chickpea, pigeonpea, pea mungbean, urdbean, lentil, soybean, & cowpea •also been found damaging cotton, sorghum, okra, maize, tomato, berseem, & sunflower Identification of the pest •Eggs – are spherical in shape and creamy white in colour, laid singly •Larva –…
•Distribution and status: All over India. •Host range: Aonla, apple, ber, citrus, guava, litchi, loquat, peach, mulberry, pear, sapota, tamarind. •It is polyphagous pest Symptoms of damage •Caterpillar bores into young fruits •Feeds on internal contents (pulp and seeds) •Fruit rotting and dropping Identification of pest •Larvae – dark brown, short and stout, covered…
•Distribution and status: Hilly tracts in India and world •Host range: Apple Symptoms of damage •Nymphs and adults suck the juice from bark of the trunk or fruits •Weakening and death of the smaller plants •Infested twigs shrivel and die •Galls on the roots •White, woolly patches on the trunk. Identification of the pest –…
•Distribution and status: USA, India and Sri Lanka •Host range: Cabbage, tomato and other cruciferous vegetables. Damage symptoms •Caterpillars start scrapping and feeding on the leaves initially and later defoliate entire plant leaving midribs and main veins. •More damage is evidenced in nurseries than in main field. Bionomics •E ggs are greenish white, spherical and…