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The Irish damselfly or crescent bluet (''Coenagrion lunulatum'') is a damselfly found in northern Europe and Asia to north-eastern China;. It is common and widespread in northern Finland, scarce and local in the Netherlands and Ireland and rare elsewhere.〔 One of its English name comes from the fact that it is found in Ireland but not in Britain. The alternative name, crescent bluet, refers to the shape of the markings on segment two of the male and its scientific name. ==Appearance== This species is similar to the azure damselfly (''C. puella''), the variable damselfly (''C. pulchellum'') and the common blue damselfly (''Enallagma cyathigerum'') with which it coexists. However, both the female and male are darker and shorter-bodied in comparison with other blue damselflies. The species can be identified using the following features: * In males the back of the abdomen is mostly black, whilst segments 8 and 9 are all blue.〔 In males the underside is bright green especially on the head and thorax (see side view) * The blue is of a darker shade than similar species * Females are dull green with black markings * In females the hind margin of the pronotum has a prominent raised point 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「Irish damselfly」の詳細全文を読む スポンサード リンク
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