Sunday, April 10, 2016

[Ichthyology • 2009] Metzia longinasus • A New Cyprinid Species (Teleostei: Cypriniformes) from the Pearl River Drainage in Guangxi Province, South China


Metzia longinasus 
Gan, Lan & Zhang, 2009   DOI: 10.1007/s10228-008-0085-7 

Abstract
Metzia longinasus, a new cultrine cyprinid species from the Hongshui-He River of the Pearl River drainage in Guangxi Province, southern China, is described here. It can be distinguished from all other congeners by having a combination of the following characters: a superior mouth, 43 or 44 lateral-line scales, a long head (length 27.2–30.8% of standard length), a long snout (length 31.7–37.0% of head length), 10 or 11 branched anal-fin rays, and no longitudinal black band extending along each side of body from the extremity of the gill opening to caudal-fin base.

Keywords: Cypriniformes; Cyprinidae; Metzia longinasus; New species; South China


Metzia longinasus sp. nov.  
  
Diagnosis. A species of Metzia with a superior mouth,43 or 44 lateral-line scales, a long snout (length 31.7–37.0% of HL); a long head (length 27.2–30.8% of SL), 10or 11 branched anal-fin rays, and absence of a longitudinal black band extending along each side of body from extremity of gill opening to caudal-fin base.


Distribution. Metzia longinasusis currently known exclusively from the Hongshui-He River of the Pearl River drainage at Du’an County, Guangxi Province, South China (Fig.2).

Etymology. The specific epithet, used as a noun inapposition, is derived from the Latin longus (long) andnasus (snout), alluding to the presence of a long snout (length greater than eye diameter) compared with all other congeners.


 Xi Gan, Jia-Hu Lan and Ee Zhang. 2009. Metzia longinasus, A New Cyprinid Species (Teleostei: Cypriniformes) from the Pearl River Drainage in Guangxi Province, South China. Ichthyological Research. 56(1): 55-61.  DOI: 10.1007/s10228-008-0085-7

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