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Wollunquaderes majkenae gen. et sp. nov.-a new cyclorhagid kinorhynch genus and species from the Coral Sea, Australia
Sørensen, M.V.; Thormar, J. (2010). Wollunquaderes majkenae gen. et sp. nov.-a new cyclorhagid kinorhynch genus and species from the Coral Sea, Australia. Mar. Biodiv. 40(4): 261-275
In: Marine Biodiversity. Springer: Berlin. ISSN 1867-1616, more
Peer reviewed article

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Keywords
    Meiofauna; Morphology (animal); New genus; Taxonomy; ISEW, Australia [gazetteer]; ISEW, Coral Sea [gazetteer]; Marine

Authors  Top 
  • Sørensen, M.V.
  • Thormar, J.

Abstract
    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.

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