Studies on integrated control of citrus pests. 3. Suppressive effects of the red wax scale (Ceroplastes rubens) density by a parasitic natural enemy, Anicetus beneficus (Hymenoptera, Encyrtidae).
A hymenopterous parasitoid (Anicetus beneficus) was imported and released to control the coccid Ceroplastes rubens on Cheju Island, Korea Republic, on 5 July 1975. The parasitoid was released at 16 sites in 1977 and 5 sites in 1993. Observations in 1977 and 1993 showed that parasitism by A. beneficus had increased in some locations such as Seogwipo, Hallim and Cheju city but decreased in populations in Myong-wol and Nabeub. The coccid was not found on Citrus at the site of first release at Dong-Hong ri or Seogwipo and population density was very low everywhere in Cheju Island.