STUDIES ON THE REGULATION OF CHILOCORUS RUBIOUS HOPE (COLEOPTERA: COCCINELLIDAE) TO THE KOREAN LECANIUM, DIDESMOCOCCUS KOREANUS BORCHSENIUS ( HOMOPTERA:COCCIDAE )

• 黑缘红瓢虫Chilocorus rubidus Hope对朝鲜球蜡蚧Didesmococcus koreanus Borchsenius控制作用的研究