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Summer fruit tortrixfruit tree pest, tree pest, Summer fruit tortrix, apple, pear, peach, azalea, forsythia, peanut
Summer fruit tortrix is a type of species which is common during spring. The pictures below were taken from Grape Myrtles and roses but you can see it from apple trees as well. Summer fruit tortrix larvae can inflict serious damage. Therefore, you should observe its head with small portable microscope and you should make a strategy of prevention of breeding and extermination. 
 
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summer fruit tortrix adult

Summer fruit tortrix
Lepidopter tortricidae.
 
  • Scientific name: Adoxophyes orana (Fischer von Roslerstamm)
  • English name: Summer fruit tortrix
  • Size: The body length of adult is 7mm to 9mm, larva is 17mm, and pupa is 10mm
  • Hosts: apple, pear, peach, azalea, forsythia, peanut
  • Distributions: Korea, China, Eurasia
 
The body length of adult is 7mm to 9mm. This is orange color round shaped moth. The length of  spread wings are 18mm to 20mm. There is two diagonal lines on the center of front wings. When it spawns eggs, it produces more than 100 eggs in pile uniformly. Moreover, the color of eggs is yellow. The body length of larva is around 17 mm. The body color is yellowish green and there is a dark brown pattern on its cheek and ocellus. The length of pupa is 10 mm or less. 
 
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summer fruit tortrix pupa
© 2016 Jadam All Rights Reserved
summer fruit tortirx larva
Summer fruit tortrix occurs 3 to 4 times annually. It stays over winter as an larva in the gap of the bark of a tree. Those larvae start to come out from harbor and eat bud in the blossom time. When the leaf folds out, it will be rolled up vertically and the larvae give a damage inside. The size of larva is small but it has a good appetite. It gnaw the surface of fruit so the value of fruit will decrease. 

The first adults appear between the middle of May to the early June, the second adults appear between late June to the middle of July, the third adults appear between early August to late August, and the forth adults appear between late September to the middle of October. However, the density of generation rate is low. 
 
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the head of summer fruit tortrix larva

Summer fruit tortrix adults harm bud of apple tree in the germinating period and penetrate into its flower or flower custer. The adults which were hatched out in summer roll up the new shoot's fore-end and give a damage. Moreover, it scratch the surface of fruit. Therefore, the value of fruit falls down. Especially, if a leaf is closer to fruits, there will be serious damage. 

Translated by Sunyoung Cho


 

Other articles by Teokgi ParkInterviewed on : 2016.05.31 23:57

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#Lepidoptera#Tortricidae

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