Monitoring of Leopard Moth, Zeuzera pyrina, on Apple Trees in Albehira Governorate

Document Type : Original Article

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Plant Protection Research Institute, Alexandria, Egypt.

Abstract

Field studies were conducted through three successive seasons 2015, 2016 and 2017 to monitor the different stages of the leopard moth in apple orchards in Kafr Eldawar, Albehira Governorate. During Spring, number of active galleries (larvae) / 10 trees ranged from 2.5 to 3.8 during the three seasons. The exuvia was not detected during the period from March 25 to April 25 and began to appear at May 4 (5.0, 6.0 and 5.5 exuvia / 10 trees during 2015, 2016 and 2017, respectively). Number of larvae / 10 trees reached to the maximum during the period from August 25 to September 4, where it was 15.5 and 16.0 during 2015, 14.5 and 14.3 during 2016 and 15.3 and 14.0 during 2017. On the other hand, exuvia reached the highest numbers at starting period of Summer season and reached to the least number at July 25. During Autumn season, there was a slight fluctuations in the number of larvae (active gallaries) / 10 trees and it was ranged between 11.3 to 22.3, at the three successive seasons. Exuvia were not detected in the Autumn and Winter during the three seasons. This study is useful to determine the suitable time for application of mechanical and chemical control of larvae and attracting pheromones and mating disruption in the integrated pest management programs for leopard moth.      

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