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Tiger Beetle Leading Way ハンミョウの道教え

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Uploaded by on Aug 28, 2008

Tiger beetles (Cicindelia japonica japonica, family Cicindelidae) always take the lead ahead of you on the dirt road. Why on earth do they do this? They are brightly coloured and so beautiful. Late-August 2008 in Japan.
http://picasaweb.google.co.jp/lh/photo/2W1W1iIizU62wGN-0vqHuA?feat=directlink

ハンミョウと言えば道教え。いつ見てもこの行動は不思議です。逃げるのなら一気に遠くに飛んだり道端の草叢に入れば済むのに、思わせぶりに近くの路上に下りて挑発行為?を­繰り返します。野鳥(チドリなど)の利他的な偽傷行動を連想してしまう。単純に飛翔力が弱くて日向の砂利道から逸れたくないのだろうか。

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