Pupal Parasitoids of <I>Yponomeuta malinellus</I> (Lepidoptera: Yponomeutidae) in Northeast Asia
AbstractPupal parasitism of the apple ermine moth, Yponomeuta malinellus Zeller (Lepidoptera: Yponomeutidae), was investigated in northeast Asia with the goal of identifying potential biological controls of the moth, which threatened the apple industry in Washington State, USA during the 1980s. Seven primary and 2 secondary parasitoids were recorded from 27, 472 pupae collected and reared from a total of 20 collections at 16 sites in Korea, northern Honshu and Hokkaido Islands in Japan, and Shanxi Province in China during a 4-year period from 1988 to 1991. The mean total parasitism rate was highest in Korea (38.5%), while the lowest rate of 2.1% was recorded from Shanxi, China. The mean total parasitism rate detected from Hokkaido and Honshu Islands in Japan was 17.2 and 10.1%, respectively. The ichnueumonid wasp Herpestomus brunnicornis Gravenhorst dominated the parasitism in Korea and Japan, while Coccygomimus disparis (Viereck) was responsible for most mortality of the moth pupae in Shanxi, China. Diadegma armillatum (Gravenhorst) caused very low mortality in this study, although it is known as an important parasitoid from Europe and Eurasia. There were significantly different levels of parasitism rates of apple ermine moth pupae among geographical locations sampled, likely due to the habitat type and host plant of the apple ermine moth. Herpestomus brunnicornis collected from Korea and Japan was established in Washington State, USA as a biocontrol agent of the apple ermine moth.
View this article in BioOne
Copyright for any article published in Florida Entomologist is held by the author(s) of the article. Florida Entomologist follows terms of the Creative Commons, Attribution Non-Commercial License (cc by-nc). By submitting and publishing articles in Florida Entomologist, authors grant the FOJ and Florida Entomologist's host institutions permission to make the article available through Internet posting and electronic dissemination, and to otherwise archive the information contained both electronically and in a hard printed version. When used, information and images obtained from articles must be referenced and cited appropriately. Articles may be reproduced for personal, educational, or archival purposes, or any non-commercial use. Permission should be sought from the author(s) for multiple, non-commercial reproduction. Written permission from the author(s) is required for any commercial reproduction.