Artificial multiplication method for tetrastichus septentrionalis

The invention discloses an artificial multiplication method for tetrastichus septentrionalis. The method includes the following steps of (1) selection of a substitute host; (2), field collection and selection of micromelalopha troglodyta pupa; (3), cultivation of bee species; (4) extraction of information matter; (5), processing of antheraea pernyi pupa; (6), bee receiving; (7), cultivation and development. According to the artificial multiplication method, pupa which is not subjected to parasitism is soaked with ethyl alcohol, pupa surface extract is obtained, then the pupa surface extract is sprayed on the antheraea pernyi pupa in an artificial spraying mode, the tetrastichus septentrionalis is induced to be subjected to parasitism, and the parasitism rate is raised. The tetrastichus septentrionalis is subjected to indoor large-scale multiplication, and a practical technical means is provided for preventing and controlling hyphantria cunea, micromelalopha troglodyta and other lepidoptera pests for forest cr