南方定点観測船に飛来した昆虫類 : 第 5 報 1968 年度の飛来昆虫類

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1. During 1968 observation year more than 1500 individuals of insects, referable nearly 90 species, were captured on two weather-ships located at 29°N, 135°E, about 500km south of Japanese mainland. 2. These insects were listed in Japanese text of this article. Fifty-nine species are newly added to our previous list (with). A table was prepared to show the occurrence of 33 species of them. 3. It was recognized that, in general, they visit the ship during a particular synoptic situation, i.e., under the presence of depression, or front, or typhoon. On the other hand, when the location was entirely covered by a Ogasawara high pressure few insect are encountered on the ship. A definite faunal change is being supposed when the monsoon switches from southwest to northeast, which usually occurs during September. 4. For the moment, one may list the following insects as regular members of this area : Odonata : Anax parthenope julius, Pantala flavescens. Lepidoptera : Macroglossum saga, M. pyrrhisticta, M. stellatarum, Herse convolvuli, Agrotis ipsylon, A. fucosa, Heliothis armigera, Prodenia litura, Leucania separata, Plusia agnata, Etiella zinckenella, Hymaenia recurvalis, Cnephalocrocis medinalis, Plutella xylostella. Hemiptera : Leptocorisa chinensis, Sogatella furcifera, Nilaparvata lugens. Diptera : Brachydeutera longipes, Culex tritaeniorhynchus. Among these specis Pantala flavescens, Macroglossum stellatarum, Herse convolvuli, Agrotis ipsylon, Leucania separata, Plutella xylostella are noted world migrants. 5. Some early season migrants, such as Anax guttatus, Hybraea sp., Cantao ocellatus, Nezara viridula are believed to have come from the south, they are not, at least, established in the mainland of Japan. 6. On Aug. 2-3, a swarm flight of the leaf-hoppers, Sogatella furcifera and Nilaparvata lugens, both important rice culture pest, were again recognized as the previous year. 7. A true marine Diptera, Telmatogeton japonicus, was captured for the first time. According to Dr. Hashimoto this species is a tidal zone dweller, and such long distance flight has never been known. 8. Some Aleurodids, Aphids and some Diptera were trapped by air-net while sailing, these have not been captured on the ship staying at the weather station in the south. 9. House-hold pests, a few beetles and ants have been excluded as these are suspected to have come attached to or developed in the ship. Some moths coming to the boat from the nearby land or islands while sailing should better be dropped from regular flight migrants.
1970-12-15

南方定点観測船に飛来した昆虫類 : 第 5 報 1968 年度の飛来昆虫類

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