柏の葉第2水辺公園で見たコシアキトンボ、腹部の付け根が白いのでオスだ。木立に囲まれた池や沼などに生息するという。この水辺公園の環境はその通りだ。
The Koshiaki dragonfly (Pseudothemis zonata) I saw at Kashiwanoha 2nd Waterside Park is male because the base of its abdomen is white. It lives in ponds and swamps surrounded by trees. That’s exactly what the environment of this waterside park.
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