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Systematic Parasitology

, Volume 82, Issue 2, pp 147–165 | Cite as

Cavearhynchus, a new genus of tapeworm (Cestoda: Trypanorhyncha: Pterobothriidae) from Himantura lobistoma Manjaji-Matsumoto & Last, 2006 (Rajiformes) off Borneo, including redescriptions and new records of species of Pterobothrium Diesing, 1850

  • Bjoern C. Schaeffner
  • Ian Beveridge
Article

Abstract

A new genus of trypanorhynch cestode is described from the tubemouth whipray Himantura lobistoma Manjaji-Matsumoto & Last, 2006 in the South China Sea off Malaysian Borneo. Cavearhynchus foveatus n. g., n. sp. possesses four pedicellate bothria in a cruciform arrangement, a heteroacanthous, heteromorphous metabasal tentacular armature with five hooks per principle row and an alternating longitudinal file of intercalary hooks on the bothrial surface of each tentacle, but lacks prebulbar organs and gland-cells within the bulbs. It, thus, closely resembles taxa belonging to the lacistorhynchoid family Pterobothriidae Pintner, 1931. However, the new genus differs from other genera within this family in the possession of bothrial pits. Although a distinguishing characteristic of the superfamily Otobothrioidea Dollfus, 1942, representatives of this group exhibit two bothria and the bothrial pits are lined with spiniform microtriches, whereas the pit-like structures.of C. foveatus n. g., n. sp. entirely lack microtriches. Redescriptions of two species of Pterobothrium, namely P. lesteri Campbell & Beveridge, 1996 and P. platycephalum (Shipley & Hornell, 1906) Dollfus, 1930 are provided from material collected off Borneo and several localities off Australia. Moreover, new host and locality records are added for P. australiense Campbell & Beveridge, 1996 and P. pearsoni (Southwell, 1929) Beveridge & Campbell, 1989.

Keywords

Vitelline Follicle United States National Parasite Collection South Australian Museum Hermaphroditic Duct External Seminal Vesicle 
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.

Notes

Acknowledgements

The authors would like to acknowledge Dr Janine N. Caira (University of Connecticut) and Dr Kirsten Jensen (University of Kansas), who made material available for the present study. Collecting in Borneo was funded by National Science Foundation (NSF) PBI award Nos DEB 0818696 and DEB 0818823, and NSF BS&I award Nos DEB 011882, DEB 0542846 and DEB 0542941. BCS is particularly grateful to J. Caira and K. Jensen, who supported his stay at the University of Connecticut (Connecticut, USA) and the International Workshop on Cestode Systematics and Phylogeny in Lawrence (Kansas, USA) during 2011. The stay of BCS in the US was in part funded by the Australian Society for Parasitology (Network Researcher Exchange, Training and Travel Award) and the University of Melbourne (Overseas Research Experience Scholarship, ORES). Collecting in Australia was funded in part by the Australian Biological Resources Study.

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Copyright information

© Springer Science+Business Media B.V. 2012

Authors and Affiliations

  1. 1.Department of Veterinary ScienceThe University of MelbourneWerribeeAustralia

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