Study On The Parasitical Natural Enemies Of Diaphania Pyloalis Walker And Biological Character Of The Dominant Species

As one of the dominating mulberry pests, Diaphania pyloalis Walker exists widely and has serious damage. Because of the larva hiding in leaves, the traditional pesticide can't have satisfying effect, while the parasitical natural enemies can control it commendably. An effective way is expected to find to control Diaphania pyloalis Walker through studying its natural enemies.Every age larva is caught randomly. We study the parasitical natural enemies and identify them, then investigate their natural parasitism condition, definite local dominant species, and propagate the parasitical wasp in laboratory.Fourteen kinds of parasitic natural enemies are collected and ten of them have been identified, Casinaria simillima Maheshwary &Gupt is reported firstly as natural enemy of Diaphania pyloalis Walker. The average natural parasitism is about 40%, and most of the natural enemy parasite in low age larvae. Apanteles heterusiae Wilkinson and Macrocentrus philippinensis Ashmead are dominant species of larvae, and the test of propagating the dominant species indoor is successful, this is the base of propagating natural enemies largely and biological control of Diaphania pyloalis Walker...