Fruit Pests Mango Common name Scientific name Family Order Mango fruit weevil Sternochetus mangiferae Curculionidae Coleoptera Mango defoliator Cricula trifenestrata Saturniidae Lepidoptera Mango leaf cutting weevil Deporaus marginatus Curculionidae Coleoptera Mango hopper Idioscopus sp./Idiocerus sp. Cicadellidae Hemiptera Mango stem borer Batocera rufomaculata Procontarinia(=Erosomyia) mangiferae Cerambicidae Coleoptera Mango gall midge Cedidomyiidae Diptera Jackfruit Jackfruit bark borer Indarbela tetraonis Cossidae Lepidoptera Jackfruit shoot and fruit borer Diaphania caesalis Pyralidae Lepidoptera Banana Banana leaf and fruit beetle Nodostoma viridipennis Eumolpidae Coleoptera Banana stem weevil Odoiporus longicollis Curculionidae Coleoptera Litchi Litchi fruit borer Cryptophlebia illepida Tortricidae Lepidoptera Litchi mite Aceria litchii Eriophyidae Acari Litchi fruitfly Bactocera dorsalis Tephritidae Diptera Papilio demoleus Papilionidae Lepidoptera Phyllocnistis citrella Gracillariidae Lepidoptera Lemon Citrus caterpillar(Lemon butterfly caterpillar) Citrus leaf miner Guava Guava fruit borer/butterfly Virachola isocrates Lycaenidae Lepidoptera Spiralling whitefly of guava Aleurodicus dispersus Aleyrodidae Hemiptera Guava fruitfly Bactrocera correcta Tephritidae Diptera Guava mealybug Chloropulvinaria psidii Coccidae Hemiptera Dynastidae Coleoptera Others Rhinoceros beetle of Cocunut Dr. Mohammad Atikur Rahman Oryctes rhinoceros Page 1 Fruit Pests Mango fruit weevil Sternochetus mangiferae Curculionidae Coleoptera Nature of damage: Adult female lays marble sized eggs under the skin of young green mango with the help of snut. After hatching the legless grub feed on the pulps by making zigzag tunnel. With increasing the size of fruit the feeding tunnel gradually fill up with excreta. After cutting of infested fruit zigzag tunnel grub pupa and adult can be found inside the fruit. The infested fruit get rotten easily and become inedible. The adult emerge cutting its way out of the fruit. Control measures: Clean all sorts of weeds within 4 meters area around each of the mango tree during JanuaryFebruary. After harvesting of mango all parasitic plants grows on mango should be destroyed. Spray with Sumithion 50EC @ 2ml/L of water at 15 days interval for several times during March-April. Mango hopper Idioscopus sp. Cicadellidae Hemiptera Nature of damage: Mango leafhoppers feed on vegetative flush tissue by sucking the sap. They lay eggs into the underside of the mid ribs of young leaves. Feeding and egg laying cause curling and distortion of new flush and young leaves. In these situations, the insects are rarely seen. Presence of sooty mould on older leaves may also be an indication of infestation by leafhoppers but several other sucking pests can also cause these symptoms on mangoes. These pests can build up very rapidly on flowering trees and cause damage by their numerous egg laying punctures to the flower stems which then wither and fail to set fruitlets. The leafhoppers suck the sap from the and heavy production of honeydew associated with sooty mould growth may retard tree vigour and lead to fruit drop. If left untreated, leaves and flowers will be damaged and fruit roduction can be severely affected. On heavily infested trees, crop losses of 50% or more have been recorded. Control The hopper can be collected by bagging and be killed in kerosene water. Spraying with Actara 25 WG @ 5g/10L of water. Spraying with Magic 10EC 1 ml/L of water. Spraying with Carbaryl 50WP@ 4gm/L Dr. Mohammad Atikur Rahman Page 2 Fruit Pests Mango leaf cutting weevil Deporaus marginatus Curculionidae Coleoptera Nature of damage: Adult female of mango leaf cutting weevil lays eggs in the both side of midrib of newly flushed leaves and then cut off the leaves from the apex of petiole. The leaves drop on the ground. The plant thus loses a lot of young leaves. They also feed on leaf tissue by scrapping. Control Collecting the cut leaves loaded with eggs from the soil and destroying them to reduce the number of insects. Covering of newly flushed leaves with mosquito net to reduce the attack of weevil. Spraying the newly flushed leaves with Sumithion 50 EC @ 2 ml/liter of water or Decis 2.5EC@1ml/L of water. Banana leaf and fruit beetle Nodostoma viridipennis Eumolpidae Coleoptera Nature of damage: The adult beetle attack ventral surface of young leaf and the green portion of leaves are eaten up by scrapping in irregular patches. When the young bunch emerges from developing spathe, the beetle feed on the young surface of the fruit by scrapping. With the increase of age of the fruit the scar become bigger in size and the scrapped fruit have low market value. The grub feed on roots of the plants up to a depth of 6 inches. Control measures Avoid cultivation of banana in highly infested area. Crop rotation should be done. Ratoon crop should be avoided. Bagging of young banana with poly bag (42x30 inch) after emerging young bunch from spathe. This bag should have 20-30 small holes. Spraying with Diazinon 60EC @ 2ml/L of water or Sevin 85 WP 1.5g/L of water 5 days before emerging bunch, after emerging bunch, emerging of first young banana and whole banana from bunch. Dr. Mohammad Atikur Rahman Page 3 Fruit Pests Rhinoceros beetle Oryctes rhinoceros Dynastidae Coleoptera Nature of damage: The adult beetle bores through the soft tissues by cutting and chewing the tender unopened leaves and spathes. In this process leaves and inflorescence are severely damaged. When they attack unopened spathe, the inflorescence become badly damaged and in severe cases the entire inflorescence get dried up. Though death is not common in the grown up coconut plant. The beetle may cause the death of the seedlings by boring and destroying the growing point. The presence of beetle in the crown is usually indicated by the remains of chewed up fibrous frass material around the bore hole. Control The coconut plants should keep neat and clean. Dung and rotten heap of vegetables matter should be removed once in every 2-3 months. Mechanical extraction of beetle from the crown by means of hook is also effective. Apply Sevin 85 WP @5g/10L of water at breeding places of insect. Guava whitefly Aleurodicus dispersus Aleyrodidae Hemiptera Nature of damage: Both nymphs and adults suck sap from ventral surface of leaves and young twigs. The affected leaves wither and fall down, They secrete honey dew and wax materials on which black soot mould fungus develop which reduces photosynthesis of the plant ultimately affect the yield of the plant. Control At initial stage of infestation spray the infested leaves with soap water @ 10g soap dust /10 L of water. Lady bird beetle can be released as bio-control agent. Spraying the infested leaves with neem seed kernel extract at 7 days interval @ 1 kg seed /20 L of water for 12 hours and then filtrated solution is used as extract. In case of severe infestation, stray leaves with Starter 40EC @2 ml/L of water. Dr. Mohammad Atikur Rahman Page 4 Fruit Pests Jackfruit shoot and fruit borer Diaphania caesalis Pyralidae Lepidoptera Nature of damage: Among insect pests, the shoot and fruit borer, Diaphania caesalis, is a major pest of jackfruit. The insects lay eggs on tender shoots and flower buds. On hatching, the reddish brown larvae bore into shoot, flower buds and fruits, resulting in the wetting of affected parts. Larvae make small holes and enter the fruit. At the initial stage of damage, a small hole with fresh excreta can be seen. Gradually the hole is extended and at a later stage fungal infection occurs. Tender fruits may drop under severe infestation, leading to losses of 30%. Control: To protect them from egg laying, fruit may be covered with polythene bags and the affected parts removed and destroyed. Infestation may be checked naturally if the trees are regularly pruned of dead and diseased twigs and small shoots within the canopy, to allow sufficient light and air to pass through. Pruning may be done soon after harvest or at the end of rainy season. Spraying of carbaryl @ 4 g per litre of water during flowering may be recommended. Dr. Mohammad Atikur Rahman Page 5