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Pisces Pleuronectiformes: A review of the genus Tosarhombus (Bothidae) with descriptions of two new species from Saya de Malha Bank (Indian Ocean) and the Chesterfield Islands (Coral Sea)
Amaoka, K.; Rivaton, J. (1991). Pisces Pleuronectiformes: A review of the genus Tosarhombus (Bothidae) with descriptions of two new species from Saya de Malha Bank (Indian Ocean) and the Chesterfield Islands (Coral Sea), in: Crosnier, A. Résultats des Campagnes MUSORSTOM 8. Mémoires du Muséum national d'Histoire naturelle. Série A, Zoologie, 151: pp. 449-466
In: Crosnier, A. (Ed.) (1991). Résultats des Campagnes MUSORSTOM 8. Mémoires du Muséum national d'Histoire naturelle. Série A, Zoologie, 151. Editions du Muséum: Paris. ISBN 2-85653-186-5. 466 pp.
In: Mémoires du Muséum national d'Histoire naturelle. Série A, Zoologie. Editions du Muséum: Paris. ISSN 0078-9747
Peer reviewed article  
Available in  Authors 
Keywords
    Taxa > Species > New taxa > New species
    Tosarhombus Amaoka, 1969 [WoRMS]
    ISEW, New Caledonia, Chesterfield I. [Marine Regions]; ISW, Saya-de-Malha Bank [Marine Regions]
    Marine/Coastal
Authors  Top 
  • Amaoka, K.
  • Rivaton, J.
Abstract
    The bothid genus Tosarhombus is reviewed by comparing four species: T. octoculatus Amaoka, 1969, T. smithi (Nielsen, 1964), T. nielseni sp. nov. and T. neocaledonkus sp. nov. A description of the genus is given in addition to descriptions and a key to the four species. T. smithi from the western Indian Ocean is transferred from the genus Engyprosopon based on high numbers of dorsal fin rays, anal fin rays, lateral-line scales and total vertebrae, unsplit parhypural and hypural plates, and the tip of isthmus not extending to the middle part of the lower eye. T. nielseni sp. nov. from Saya de Malha Bank, western Indian Ocean and T. neocaledonicus sp. nov. from the Chesterfield Islands, west of New Caledonia, are described based on several male and female specimens. The former new species is distinguished by having the posterior 2/3 of the body on the ocular side in males colored pale violet, short pectoral fin on the ocular side (1.7-2.0 times in head length), and a long snout and upper jaw on the blind side (4.4-4.7 times and 2.5-2.6 times in head length respectively). The latter new species has a high number of scales in lateral line (more than 80), and the filamentous pectoral fin ray on the ocular side of males.
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