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Dromogomphus spinosus : ウィキペディア英語版 | Dromogomphus spinosus
Black-shouldered spinyleg (''Dromogomphus spinosus'') is a species of dragonflies in the family Gomphidae. Like other spinylegs, ''D. spinosus'' have long spines on their legs that help in the capture of prey.〔Mead, Kurt. (2009) Dragonflies of the North Woods. Duluth, MN:Kollath+Stensaas.〕 True to their name their shoulders are black. The dorsal thorax has a light green I-shaped mark with pale ovals on either side. Their flight time is between late May and early September from southern Manitoba to the east coast of the US as far south as Florida.〔〔 Terminal segments form a club with yellow lateral markings.〔Dunkle, Sidney W. (2000) Dragonflies through Binoculars. New York:Oxford University Press. p 95-6.〕 Adults average .〔 ==References==
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「Dromogomphus spinosus」の詳細全文を読む
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