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Systematic Parasitology

, Volume 60, Issue 3, pp 211–224 | Cite as

Three new genera of trypanorhynch cestodes from Australian elasmobranch fishes

  • Ian Beveridge
  • Ronald A. Campbell
Article

Abstract

Three new genera of trypanorhynch cestodes from Australian elasmobranch fishes collected in the Arafura Sea, off the Northern Territory, are described. Fossobothrium perplexum n. g., n. sp. (Otobothriidae), from the spiral valves of Anoxypristis cuspidata (Latham) and Pristis zijsron Bleeker, is similar to the otobothriid genera Pseudotobothrium Dollfus, 1942 and Poecilancistrium Dollfus, 1929 in possessing bothrial pits and a band of hooks on the tentacle, but differs from all known otobothriid genera in having the pits joined by a prominent velum. Iobothrium elegans n. g., n. sp. (Otobothriidae), from the spiral valve of Himantura jenkinsi (Annandale), is placed in the Otobothriidae because it possesses bothrial pits, but differs from Otobothrium Linton, 1890 and other genera in lacking intercalary hooks between the principal rows and in possessing a chainette on the external surface of the tentacle in the metabasal region. Oncomegoides celatus n. g., n. sp. (Eutetrarhynchidae), from the spiral valve of Dasyatis microps (Annandale) and Himantura jenkinsi, resembles Oncomegas Dollfus, 1929 in possessing two bothria and a megahook on the bothrial surface of the basal armature, but differs in possessing an extra row consisting of four intercalary hooks formed by the overlapping of two intercalary hooks on the external tentacular surface between each of the opposing principal rows and is therefore an atypical heteroacanth.

Keywords

External Surface Elasmobranch Fish Basal Armature Spiral Valve Metabasal 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

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Copyright information

© Springer 2005

Authors and Affiliations

  • Ian Beveridge
    • 1
  • Ronald A. Campbell
    • 2
  1. 1.Department of Veterinary Science, Veterinary Clinical CentreUniversity of MelbourneWerribeeAustralia
  2. 2.Department of BiologyUniversity of Massachusetts-DartmouthN. DartmouthUSA

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