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emperor dragonfly
The emperor dragonfly〔 or blue emperor〔 (''Anax imperator'') is a large species of hawker dragonfly of the family Aeshnidae, averaging in length.〔(【引用サイトリンク】url=http://british-dragonflies.org.uk/species/emperor-dragonfly )〕 It is found mainly in Europe and nearby Africa and Asia.
==Behaviour==
They frequently fly high up into the sky in search of prey, which includes butterflies, Four-spotted Chasers and tadpoles; small prey is eaten while flying. They breed in a variety of aquatic habitats from large ponds to dykes, but they require a plentiful supply of vegetation in the water. The females lay the eggs into plants such as pondweed, and always lay alone. The male is highly territorial, and difficult to approach.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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