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Apple blossom weevilfruit tree pest

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the apple blossom weevil adult 
 
Apple blossom weevil 
Beetle Curculonidae 
 
О Scientific name : Anthonomus pomorum (Linne)
О Size : The length of its body is 50 mm
О Host : pear tree, apple
О Distribution : Korea, Japan, Poland, Netherlands and more.
 
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Apple blossom weevil puma
 The body length of apple blossom weevil adult is around 0.5 cm and small black rice weevil. Its eggs are egg shaped and red.  Its larva is long cylindrical and light red yellow. The edge of both sides are very thin. Its bottom part is cone-shaped and its head is red brown. Its chest is light yellow.
 
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Apple blossom weevil larva
 
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Late-instar apple blossom weevil larva
The adults stay behind of a leaf all together and nibble it. When autumn comes, it goes to under the bark of a tree or fallen leaves and stay over the coldest season. 

Around the middle of April, the adults move out from the place where they stayed the winter and go to a bud. It spawns inside the bud. When it hatches out, it starts to nibble stamen and ovary. The bud becomes brown and die or the flower leaves are bounded with something like web. It appears only in apple and pear orchards. It is easy to find around malus prunifolia and malus sieboldii where farmers uses less or no control pest. 
 
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Damages by apple blossom weevil (beginning)
+it is similar with damage by olethreutid
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Damages by apple blossom weevil (after damage)
Occurrence ecology adult stays the coldest season inside of the bark of a tree. It appears once a year. It appears during late March, spring and sprawn inside a bud. It hatches out after a week and bound flower leaves with wed and starts to nibble stamen and ovary. During middle of April to late April, apple blossom weevil larva becomes puma inside of bounded flower leaves and becomes an adult during middle of May. 
Translated by Sunyoung Cho


 

Other articles by Teokgi ParkInterviewed on : 2018.05.08 13:13

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#fruit tree pest#pear#apple#Anthonomus#beetle#Curculionidae

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