초록

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Abstract ▼ AI-Helper

This study was carried out to determine the site of parasitization and the occurrence of solitary versus gregarious larval or egg-larval parasitism of the pine needle gall midge, Thecodiplosis ja.ponensis, by Plutygaster matsutama and Inostemma seoule. The results are summarized as follows: 1. The e...

This study was carried out to determine the site of parasitization and the occurrence of solitary versus gregarious larval or egg-larval parasitism of the pine needle gall midge, Thecodiplosis ja.ponensis, by Plutygaster matsutama and Inostemma seoule. The results are summarized as follows: 1. The embryo of Platygaster matsutama was found in the brain and the mid-gut of the host larva, and it was surrounded with double thin transparent cysts. The external cyst was formed by the host tissue and the internal one was a trophamnion (Fig. 1. A, B). 2. The larva of Inestemma seoule was found in the nervous system of its host larva, and it was encysted by the tissues of thoracic and abdominal ganglia of the host (Fig. 1. C). 3. The number of larvae per host larva averaged between 1 to 2 for both parasite species. 4. In cases of synparasitism, only one species, Platygaster matsutama, emerged from the host puparium; the larva of Inestemma seoule died in the first stadium.