Systematic Parasitology

, Volume 88, Issue 1, pp 1–10 | Cite as

The sexual adult of Cercaria praecox Walker, 1971 (Digenea: Fellodistomidae), with the proposal of Oceroma n. g.

  • Thomas H. CribbEmail author
  • Terrence L. Miller
  • Rodney A. Bray
  • Scott C. Cutmore


A sexual adult trematode that is considered to be conspecific with the distinctive larval trematode Cercaria praecox Walker, 1971 is reported from the kyphosid fish Scorpis lineolata Kner in Moreton Bay, Queensland, Australia. The sexual adult is consistent with the cercarial body of Cercaria praecox in having a single caecum with an asymmetrical appendix, symmetrical testes immediately posterior to the ventral sucker, and the ovary and vitellarium both well posterior to the testes. This combination of characters is distinct within the Fellodistomidae Nicoll, 1909 and requires the proposal of a new genus, Oceroma n. g. Analysis of 28S rDNA sequences demonstrates that this species forms a clade with Coomera Dove & Cribb, 1995 within the Fellodistomidae. The life-cycle of the species is predicted to require two hosts and to involve the direct ingestion of the cercaria.


Ventral Sucker Oral Sucker Maximum Likelihood Analysis Posterior Extremity Vitelline Follicle 
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.



We thank the Australian Biological Resources Study and the Australian Research Council for support to T. H. Cribb. We also thank Mr Jeff Johnson of the Queensland Museum for his insights into the feeding biology of kyphosids. Collecting in Indonesia was supported by the First Educational Workshop on Marine Fish Parasites in Indonesia. T. L. Miller is supported by a Queensland Government Smart Futures Fellowship.


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Copyright information

© Springer Science+Business Media Dordrecht 2014

Authors and Affiliations

  • Thomas H. Cribb
    • 1
    • 2
    Email author
  • Terrence L. Miller
    • 3
  • Rodney A. Bray
    • 4
  • Scott C. Cutmore
    • 1
  1. 1.School of Biological SciencesThe University of QueenslandSt LuciaAustralia
  2. 2.Biodiversity ProgramQueensland MuseumSouth BrisbaneAustralia
  3. 3.School of Marine and Tropical BiologyJames Cook UniversityCairnsAustralia
  4. 4.Department of Life SciencesNatural History MuseumLondonUK

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