Marine Biodiversity

, Volume 40, Issue 4, pp 261–275 | Cite as

Wollunquaderes majkenae gen. et sp. nov.—a new cyclorhagid kinorhynch genus and species from the Coral Sea, Australia

  • Martin V. SørensenEmail author
  • Jonas Thormar
Original Paper


A new kinorhynch genus and species, Wollunquaderes majkenae gen. et sp. nov., is described from a locality in the Coral Sea, southeast of the Great Barrier Reef, Australia. The new genus and species is recognized by the presence of outer oral styles with a conspicuous fishbone-like substructure and 16 placids that articulate with segment 1 through distinct joints. Segment 1 has a completely straight anterior margin, and is composed of a closed, cuticular ring, whereas segments 2–11 are composed of one tergal and two sternal plates. The posterior segment margins of segments 2–9 form conspicuous flare-like extensions in the lateral accessory positions. Sexually dimorphic characters include presence of paired papillae on the sternal plates of segments 8 and 9 in females, and acicular spines in middorsal and sublateral positions on segment 10 in females, opposed to middorsal and midlateral crenulated spines in males. The new genus displays several traits found in species of Antygomonas and/or Semnoderes, but also characters that otherwise are considered unique for taxa of Centroderidae. Hence, Wollunquaderes gen. nov. cannot be assigned to any known family.


Kinorhyncha Meiofauna Morphology New genus Taxonomy 



We wish to thank the Danish Expedition Foundation for organizing The Danish Galathea 3 Expedition, and members of the Zoological Museum’s Meiofauna Group for their help with sampling and sample processing on the expedition. Special thanks go to Stine Elle for providing the line art illustrations of the new genus and species, and to Majken Them Tøttrup for organizing the sorting and processing of samples upon return from the Galathea 3 Expedition. This work has been conducted with funding from the Villum Kahn Rasmussen Foundation that supported the Natural History Museum’s Invertebrate Group during the Galathea 3 Expedition. Personal funding was furthermore granted from ”Carlsbergs Mindelegat” to J.T. and from the Danish Natural Science Research Council (grant no. 09-066003) to M.V.S. This is contribution P59 from The Danish Galathea 3 Expedition.


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Copyright information

© Senckenberg, Gesellschaft für Naturforschung and Springer 2010

Authors and Affiliations

  1. 1.Natural History Museum of DenmarkUniversity of CopenhagenCopenhagenDenmark

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