Redescription of Polydactylus sexfilis (Valenciennes in Cuvier and Valenciennes, 1831), a senior synonym of P. kuru (Bleeler, 1853) with designation of a lectotype (Perciformes: Polynemidae)
2001
Motomura, H. (Miyazaki Univ. (Japan)) | Iwatsuki, Y. | Kimura, S.
Polydactylus kuru (Bleeker, 1853), originally described from Jakarta, Java, Indonesia, has been regarded as a valid species. However, examination of two syntypes of Polynemus kuru revealed their close similarity to three syntypes of Polynemus sexfilis Valenciennes in Cuvier and Valenciennes, 1831, in the synonym of which the former is herein included. Polydactylus sexfilis, which is widely distributed in the Indo-Pacific region, is redescribed on the basis of a newly-designated lectotype and two paralectotypes, and a wide range of non-type material. The species is characterized by six pectoral filaments, 15 or 16 pectoral fin rays, 61 - 67 pored lateral line scales, 8-10 scales above the lateral line, 12 - 14 below, 11 - 14 and 15 - 18 upper and lower series gill rakers, respectively (27-31 total), teeth present on vomer and a long second dorsal fin ray (mean 26% [range 21 - 30%] of standard length).
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