<国立科博専報>小笠原諸島(含硫黄諸島)の水棲および半水棲昆虫

概要

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In the Bonin Islands, there occur 55 species of aquatic and semiaquatic insects including 23 endemic ones as shown in Table 1. Six of them [Anax guttatus, Hypselosoma sp., Halobates sericeus, Halobates germanus, Microvelia (?) sp., Goera sp.] are newly recorded from the islands in the present paper. The descriptions of some interesting species are also given. Of the 55 species, 11 are of the Indo-Chinese origin, 11 of the Malayan origin and 5 of the Papuan origin, while 15 are either cosmopolitan or widespread species and 13 are of uncertain origin. The endemic species are also discriminated in a similar ratio; 4 Indo-Chinese, 5 Malayan, 4 Papuan and 10 of uncertain origin. Fourteen species of aquatic and semiaquatic insects seem to have invaded the Bonin Islands being carried by air current and 7 by ocean current. Though the fauna of the Bonin Islands is very poor as regards aquatic and semiaquatic insects, it is characterized by the existence of high percentage of endemic species.
国立科学博物館の論文