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Review of the Indo-Pacific Flasherwrasses of the genus Paracheilinus (Perciformes: Labridae), with descriptions of three new species

Allen, Gerald R.; Erdmann, Mark V.; Yusmalinda, Ni Luh A.


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{
  "publisher": "Zenodo", 
  "DOI": "10.5281/zenodo.46267", 
  "container_title": "Journal of the Ocean Science Foundation", 
  "title": "Review of the Indo-Pacific Flasherwrasses of the genus Paracheilinus (Perciformes: Labridae), with descriptions of three new species", 
  "issued": {
    "date-parts": [
      [
        2016, 
        2, 
        22
      ]
    ]
  }, 
  "abstract": "<p>The Indo-Pacific labrid fish genus <em>Paracheilinus </em>now contains 20 species. Most of the currently known species inhabit the mega-diverse East Indian region including <em>Paracheilinus angulatus, P. carpenteri, P. cyaneus, P. filamentosus, P. flavianalis, P. lineopunctatus, P. nursalim, P. rennyae, P. togeanensis, P. walton</em>, as well as three recent discoveries described as new species herein. Five species are known from the Red Sea and Indian Ocean, including <em>P. attenuatus </em>(Seychelles and Kenya), <em>P. hemitaeniatus</em> (Madagascar and South Africa), <em>P. mccoskeri</em> (Kenya, Comoro Islands and Arabian Gulf to Andaman Sea), <em>P. octotaenia</em> (Red Sea), and <em>P. piscilineatus</em> (Mauritius). The remaining two species, <em>P. bellae</em> and <em>P. rubricaudalis</em>, are mainly confined to Micronesia/Marshall Islands and PNG/Fiji/Vanuatu, respectively. Members of the genus are typically distinguished on the basis of their caudal-fin and dorsal-fin shapes, the presence or absence of elongate filamentous dorsal-fin rays, and, in particular, the color of terminal-phase (TP) males, including their dramatic nuptial-display patterns. <em>Paracheilinus paineorum</em> n. sp. is described from 8 specimens, 43.1-70.0 mm SL, collected in Indonesia (southwestern Flores, Sulawesi, Nusa Penida, East Borneo, and Seribu Islands) in depths of 10-65 m. It is closely related to the allopatric <em>P. filamentosus</em> and <em>P. xanthocirritus</em> n. sp., differing mainly in coloration (particularly the bright red dorsal-fin markings) and larger maximum size (to at least 70 mm SL). <em>Paracheilinus xanthocirritus</em> n. sp. is described from 12 specimens, 33.9-49.3 mm SL, collected in the South China Sea at the Anambas Islands of Indonesia and Brunei in depths of 15-25 m. In contrast to the closely related <em>P. paineorum</em> n. sp., TP males of this species have a mostly yellow dorsal fin lacking red markings. The two new species further differ from <em>P. filamentosus </em>by having a narrower interorbital and a shorter caudal peduncle. A third new species,<em> Paracheilinus alfiani</em>, n. sp., is described on the basis of two specimens, 48.8 and 49.3 mm SL, from Lembata Island in the Lesser Sunda Islands of Indonesia. It is characterized by a rounded and relatively tall dorsal fin without elongate filamentous rays, a slightly rounded caudal fin, and distinctive TP male coloration. In addition to the new species descriptions, a diagnosis and color illustrations are included for all members of the genus. We also present a key to the species and a neighbor-joining tree of mitochondrial DNA sequences which clarifies the genetic relationships among species, revealing four discrete species complexes within the genus.\u00a0</p>", 
  "author": [
    {
      "family": "Allen, Gerald R."
    }, 
    {
      "family": "Erdmann, Mark V."
    }, 
    {
      "family": "Yusmalinda, Ni Luh A."
    }
  ], 
  "page": "18-90", 
  "volume": "19", 
  "type": "article-journal", 
  "id": "46267"
}
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