Volume 10 Issue 4
Jul.  1989
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HUANG Shun-you. On Four New Species of The Genus Discogobio Lin From Yunnan,China. Zoological Research, 1989, 10(4): 355-361.
Citation: HUANG Shun-you. On Four New Species of The Genus Discogobio Lin From Yunnan,China. Zoological Research, 1989, 10(4): 355-361.

On Four New Species of The Genus Discogobio Lin From Yunnan,China

  • Received Date: 1900-01-01
  • Rev Recd Date: 1900-01-01
  • Publish Date: 1989-11-22
  • The present paper deals with the fishes of the genus Discogobio Lin collected from Yunnan.Altogether four new species are reported,they are Discogobio polylepis,D.macrophysallidos,D.elongatus,D.brachyphysallidos.The type specimens ars preserved at the Kunming Institute of Zoology,Academia Sinica.Discogobio polylepis,sp,nov.(Fig.1)Syntypes 12,body length 73-121 mm.from Chengjiang,Wuxiang lake.D.iii-8;A.iii-5;P.I-14-16;V.I-8.L1.44/6,4-v/45,around cpe-duncle scales 16.Gill-rakers 18-19 (exteral),21-25 (inner).Phrygeal teeth 3.5-5.3.vertebrae 4+37.Diagnosis;Differs from other known species of Discogobio in larger number of scales in lateral line.Discogobio macrophysallidos,sp.nov.(Fig.2)Syntypes 9,body length 81-114 mm.from Fuyan,lounpin,Yunnan.D.iii-8;A.iii-5;P.I-14-15;V.I-8.L.1.42/5-6,4-4.5-v/43,around c-pedncle scales 16.Gill-rakers 18-22 (exteral),21-25 (inner).phyrygeal teeth 3.5-5.3.vertebrae 4+36-37.Diagnosis:The new species is closely allied to Discogobio yunnanensis (Regan),but differs 1)lateral line scales 42-43 versus 40;2)vertebrae 4+36-37 versus 34.It is closely allied to Discogogbio polylepis.sp.nov.,but differs 1)lateral line scales 42-43 versus 44-45;2)length of the postero air-bladder cavity is 3.4-4.1 times than that of the front air-bladder cavity versus 1.5-2.1 times.Discogobio elongatus,sp.nov.(Fig.3)Syntypes 21,body length 48-108 mm.from Xuanwei,Yunnan (Zhujiang river system).D.iii-8;A.iii-5;P.I-14-16;V.I-8.L.1.42/5-5.5,3-3.5-v/44,around c-peduncle scales 16.Gill-rakers 20-24 (exteral),23-28 (inner).Phyrygeal teeth 3.5-5.3.vertebrae 4+35-36.Diagnosis:Differs from other known species of the Discogobio Lin:The ratio of the body length to the hight of the body is 6.0-7.5 times.Discogobio brachyphysallidos,sp.nov.(Fig.4)Syntypes 23,body length 56-141 mm.from Yiliang,Luopin,Yunnan.D.iii-8;A.iii-5;P.I-14-16;V.I-8.L.1.42/5.5-6,3.5-4-v/43,around c-peduncle scales 16.Gill-rakers 17-19 (exteral),20-23 (inner).phyrygeal teeth 3.5-5.3.vertebrae 4+34-35.Diagnosis:This new species is closely allied to Discogobio tetrabarbatus Lin,but differs 1)the scales in the lateral line 42-43 versus 37-39;2)vertebrae 4+34-35 versus 4+31;3)c-peduncle length 1.7-2.0 versus 1.1-1.6.
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