赤坂御用地(東京都港区)の庭園のクモ

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Spider specimens of about 1,100 in all were obtained during faunal researches in the Akasaka Imperial Gardens, Minato-ku, Tokyo, made by the National Science Museum of Japan in the years between 2002 and 2004. These spiders were collected from various places in the Gardens by sweeping, beating, and sifting methods, by extraction with Tullgren Funnel and Malaise trapping as well as by collecting with hands. A hundred species of 24 families were recorded based on this material, including a trap-door spider Latouchia typica, which is registered in the red list of endangered animals of Japan as near threatened, and an unknown species of the theridiid genus Pholcomma, which seems new to science. The study site covers an area of 510,000 square meters and is composed of forests with evergreen oaks, Castanopsis cuspidata, Quercus glauca and Q. myrsinaefolia, and deciduous trees, Aphanathe aspera, Zelkova serrata, and Acer palmatum, some planted trees of Prunus mume and Chamaecyparis obtusa, open lawn, narrow paths and artificial ponds, belonging to villas of the Imperial Family. Between seventeenth and nineteenth centuries, the area was used by a Daimyo of Kishu Family in the Tokugawa Shogun Family for his residence and houses of his retainers, and their gardens and farms. However, in 1872 that was transferred to the Imperial Household Agency, and the gardens have been kept in nature under complete gardening care. Referring to the historical progress, nature of Akasaka Gardens should be similar to that of the Imperial Palace in Chiyoda-ku, only 2 km apart (Ono, 2000). More than 70% of species found in the Akasaka Gardens can live only in places with good vegetation. This fact indicates that the Akasaka Gardens play an important part in a green tract of urban area in the center of Tokyo.
国立科学博物館の論文
2005-03-25

赤坂御用地(東京都港区)の庭園のクモ

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