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Ephemera danica : ウィキペディア英語版 | Ephemera danica
''Ephemera danica'' is a species of mayfly in the genus ''Ephemera''. The common name "green drake" is used in some parts of the British Isles for this species. ==Description== ''Ephemera danica'' can reach an imago size of in males, while females are larger, reaching . This mayfly, with its characteristic markings and three tails (Cerci), is the most commonly seen of British Ephemeridae. Imago wings are translucent with dark veining, while in subimago they are dull and yellowish with brown veins. Moreover forelegs and the tails of the spinners are very much longer than in duns.〔(First-nature )〕 Mouthparts are non-functional, as adults do not feed.〔(A teacher’s introduction and reference toMayfly )〕〔(Ephemeroptera-galactica )〕 These insects are part of the aerial plankton and usually they are food for swallows, trouts and many amphibians and spiders.
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Ephemera danica」の詳細全文を読む
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