•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 in the cracks and crevices of the barks on the tree
Identification of pest
• •Nymph – Nymphs pale yellow, very active and hide in lower shoots or in cracks in the barks. The insect appears in February when mango trees come to flowering. • Adult
a. Idioscopus niveoparsus; Adults: dark with wavy lines on wings and three spots on scutellum.
b. I. clypealis; Adults: small, light brown with dark spots on the vertex and two spots on scutellum.
c. Amirtodus atkinsoni; Adults: large, light brown with two spots on scutellum.
Life cycle
Management
•Avoid close planting, as the incidence very severe in overcrowded orchards.
•Orchards must be kept clean by ploughing and removal of weeds.
•Spray two rounds of acephate 75 SP@ 1g/lit or phosalone 35 EC@ 1.5 ml/li
OR
•First spray at the time of panicle emergence , second spray two weeks after first spray.
•Wettable sulphur @ 2 g/lit may be sprayed after spraying carbaryl to avoid mite resurgence.
•The mixture toxaphene with sulphur (1:1) have been reported to be effective against pest.
•Neem oil 5 ml/lit of water can be mixed with any insecticides
•Spray 3 per cent neem oil or neem seed kernel powder extract 5 per cent
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