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題名 | The Nominal Invalidity of the Cyprinid Genus, Parasinilabeo, with Descriptions of a New Genus and Species=鯉科異華鯪屬(Parasinilabeo)命名的無效性及一新屬和一新種的描述 |
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作 者 | 蘇瑞鳳; 楊君興; 崔桂華; | 書刊名 | 動物研究學刊 |
卷期 | 40:2 2001.04[民90.04] |
頁次 | 頁134-140 |
分類號 | 386 |
關鍵詞 | 異華鯪屬; 副直口鯪屬; 小眼副直口鯪; Invalidity of parasinilabeo; Pararectoris; Pararectoris microps; |
語文 | 英文(English) |
中文摘要 | 本文對建立於1939年的異華鯪屬(Parasinilabeo)鯪魚進行了系統分類整理,認為異華鯪屬不成立。同時描述一新屬和一新種以及副直口鯪數(Pararectoris assimilis)的 重新描述。新屬副直口鯪(Pararectoris)的模式種為副直口鯪(Pararectoris assimilis Wu and Yao, 1977)。該屬與華纓魚屬和直口鯪屬的親緣關係非常相近,其共同特徵為:吻皮發達,前緣分裂為小流蘇,吻板和下唇在口角處相連,下唇沒有形成口吸盤,腹部鱗片變小,舌頜骨前緣不向外延展而形成一深弧形凹陷,吻端和兩側分布有珠星,背鰭前脊椎骨數12-13,臀鰭後尾椎骨數10-12。該屬區別於相近屬的特徵為:背鰭分支鰭條為7;吻皮前緣佈滿角質突起;上唇形成一列小葉貼在上頜背面;下唇前緣被許多角質乳突覆蓋,吻端的珠星排列整齊。該屬魚類僅分布於長江和珠江流域,為中國特有屬。小眼副直口鯪的特徵為:僅有一對鬚,為吻鬚,無口角鬚,側線鱗41-45,第一鰓弓外側鰓耙數為16,下唇上被角質突及唇的後部區域無黑色素。該種分布於長江流域。 |
英文摘要 | A new genus,Pararectoris Su, Yang and Cui, is designated based on the type species, Pararectoris assimilis (Wu and Yao, 1977). The new genus differs from 2 closely related genera, Sinocrossocheilus and Rectoris, by the following combination of characters:rostral cap joined directly with lower lip in mouth corners; the well-developed rostral cap covering both the upper lip and upper jaw, the prefringe of the rostral cap in the form of fimbriations with heavily hornified papillae; a row of tiny lobes on the dorsum of the upper jaw; prefringe of the lower lip with dense hornified papillae, and 7 branched dorsal fin rays. A new species, P. microps, is described on the basis of 6 specimens from the Taipingjiang River (a tributary of the Yuanjiang River, upper Yangtze River), Guizhou Province, China. This new species is distinguished by the following: only 1 pair of barbels (rostral barbels); the narrow papillated area of the lower lip extending to the posterior margin of the nostril; 41-45 lateral line scales; sixteen gill rakers on the outside of the 1st gill arch; and no black pigment on the area behind the hornified prefringe of the lower lip. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。