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 a small portable microscope and you should make a strategy of prevention of breeding and extermination. 
 

© 2016 Jadam All Rights Reserved 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 an adult is 7mm to 9mm, a larva is 17mm, and pupa is 10mm
• Hosts: apple, pear, peach, azalea, forsythia, peanut
• Distributions: Korea, China, Eurasia

 
The body length of an adult is 7mm to 9mm. This is orange color round shaped moth. The length of spread wings is 18mm to 20mm. There are 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 the eggs is yellow. The body length of the 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 the pupa is 10 mm or less. 
 

© 2016 Jadam All Rights Reserved 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 a larva in the gap of the bark of a tree. Those larvae start to come out from the harbor and eat bud in the blossom time. When the leaf folds out, it will be rolled up vertically and the larvae give damage inside. The size of the larva is small but it has a good appetite. It gnaws 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. 
 

© 2016 Jadam All Rights Reserved the head of summer fruit tortrix larva

Summer fruit tortrix adults harm bud of an 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 damage. Moreover, it scratches the surface of the fruit. Therefore, the value of fruit falls down. Especially, if a leaf is closer to fruits, there will be serious damage. 

 

Other articles by Deogkee ParkInterviewed on : 2016.05.31 23:57

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#Lepidoptera#Tortricidae