Egg Parasitism in Lymantria dispar (Lepidoptera, Lymantriidae) in Japan and South Korea

概要

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During surveys (1975-78) for egg parasites of gypsy moth, Lymantria dispar, 2, 110 egg mass samples were collected on all major Japanese islands and in South Korea. Past records and this study now confirm 6 primary egg parasite species (Anastatus japonicus ASHMEAD, Ooencyrtus kuvanae (HOWARD), Pseudanastatus albitarsis ASHMEAD, Anastatus sp. (not japonicus) Trichogramma dendrolimi MATSUMURA, Telenomus sp.), one hyperparasite (Tyndarichus navae HOWARD) probably attacking O. kuvanae, and one doubtful record (Marietta javensis (HOWARD) are now recorded as associated with gypsy moth in these two countries. Overall parasitism of eggs was 1.3% in Japan (max. 2.9% at Chubu area, Honshu) and 10.0% in Korea (max. 11.9% in NW region). These figures were considerably lower than recorded levels of parasitism for North America and Europe. Distribution of O. kuvanae was spotty but limited to southern Japan and all areas sampled in Korea. Anastatus japonicus was widespread but appeared inconsistently (21% of Japanese collection sites). Tyndarichus navae was most common in Korea but a few were recovered in Honshu. A single male Anastatus sp. (not japonicus) was recovered at Gifu, Honshu. Telenomus sp. was recorded for Hokkaido but from earlier work.
日本昆虫学会の論文
1988-06-25