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Japanese Journal of Ichthyology

, Volume 33, Issue 2, pp 119–134 | Cite as

A new species ofScymnodalatias from the southern oceans, and comments on other squaliform sharks

  • Toru Taniuchi
  • J. A. F. Garrick
Article
  • 51 Downloads

Abstract

Scymnodalatias albicauda sp. nov. is described from two specimens taken at high latitudes (45°S and 49°S). It is distinguished fromS. sherwoodi, only known species of the genus, by having white markings on the caudal fin, the second dorsal posterior tip almost reaching the upper caudal fin, shorter snout and head, smaller eye and larger fins. Relationships ofScymnodalatias to the generaScymnodon, Centroscymnus, andZameus are discussed, based chiefly on dermal denticle structure.Scymnodalatias andZameus uniquely share transverse ridges on their dermal denticles, and on this character they are treated as sister-groups. Comments on the above genera,Z. squamulosus and some species ofScymnodon are made to clarify their systematic status. As a result, it is proposed thatScymnodon includesichiharai, macracanthus, plunketi, andringens, thatCentroscymnus includescoelolepis, crepidater, crypt acanthus, andowstonii, and thatZameus includessquamulosus.

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Copyright information

© The Ichthyological Society of Japan 1986

Authors and Affiliations

  • Toru Taniuchi
    • 1
  • J. A. F. Garrick
    • 2
  1. 1.Department of Fisheries, Faculty of AgricultureUniversity of TokyoTokyoJapan
  2. 2.Department of ZoologyVictoria University of WellingtonWellingtonNew Zealand

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