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''Onychogomphus forcipatus'', the small pincertail or green-eyed hook-tailed dragonfly, is a species of dragonflies belonging to the family Gomphidae. This quite common and widespread dragonfly is present in most of Europe. The adults grow up to long and can be encountered close to running water and lakes from June through September. Their life cycle lasts about 3–5 years. The eyes of ''Onychogomphus forcipatus'' are widely separated and grey-to-green. The two black lines on the side of the thorax are relatively narrow and touch the midline. It has a yellow line on the vertex and two cells above the anal triangle. The abdomen in males is fitted with three hooks of large size (anal appendages). Cercoids may be dark and have a subterminal tooth. The base of the hindwing is angled in males and rounded in females. ==Subspecies== *''Onychogomphus forcipatus'' var. ''albotibialis'' Schmidt, 1954 *''Onychogomphus forcipatus'' var. ''forcipatus'' (Linnaeus, 1758) *''Onychogomphus forcipatus'' var. ''unguiculatus'' (Vander Linden, 1820) 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「Onychogomphus forcipatus」の詳細全文を読む スポンサード リンク
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