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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Gryllus assimilis ： ウィキペディア英語版 Gryllus assimilis ''Gryllus assimilis'', commonly known as the Jamaican field cricket, is one of many cricket species known as a field cricket. It is found in the West Indies, southern United States, Mexico and South America. ==Taxonomy== At one time, many field crickets found in the eastern states of the United States were assumed to be a single species and were referred to as ''Gryllus assimilis''. However in 1932, the entomologist B. B. Fulton showed that four populations of field cricket in North Carolina, that were morphologically identical and which were all considered to be ''G. assimilis'', produced four different songs. It was further observed that though some had overlapping habitats, each population had different seasonal life cycles and were unable to cross-breed. Further investigation led to the acceptance of a species complex comprising eight species in the eastern states, including two that have indistinguishable songs but different seasons of activity, and one where the males are mute. Once these eight species were distinguishable by song, tiny morphological differences were discovered between them, such as the precise number of teeth on the stridulatory mechanism. None of these species are the Jamaican field cricket, which was first described in 1775 by the Danish zoologist Johan Christian Fabricius, the type locality being Jamaica.〔 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「Gryllus assimilis」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.