Eggs are laid individually in punctures in the leaf epidermis.There is no preference for upper or lower surface. First larval stage burrows into the mesophyl tissue.Second stage also feeds in the mesophyl tissue.Third stage focus on feeding the upper leaf surface.When it is mature,it cuts a longitudinal slit in the leaf and exits to pupate on the leaf surface or on the ground
Eggs are laid individually in punctures in the leaf epidermis. There is no preference for upper or lower surface. First larval stage burrows into the First larval stage burrows into the mesophyl mesophyl tissue. Second stage also feeds in tissue. Second stage also feeds in the mesophyl mesophyl tissue. Third stage focus on tissue. Third stage focus on feeding the upper leaf surface. When it is feeding the upper leaf surface. When it is mature, it cuts a longitudinal slit in the leaf mature, it cuts a longitudinal slit in the leaf and exits to pupate on the leaf surface or and exits to pupate on the leaf surface or on the ground. on the ground
5)Factors impacting population Climate conditions Prefer high temp.,can not bear cold. ▣Host plants Favor plants of Leguminosae and Cucurbitaceae most. ▣Natural enemy Parasite rate averages 32.1%but can reach up to 68.4%in Guangdong
Climate conditions Climate conditions Prefer high temp. Prefer high temp.，can not bear cold. can not bear cold. Host plants Host plants Favor plants of Leguminosae and Favor plants of Cucurbitaceae most. Natural enemy Parasite rate averages 32.1% but can Parasite rate averages 32.1% but can reach up to 68.4% in Guangdong. reach up to 68.4% in Guangdong. 5) Factors impacting population 5) Factors impacting population