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A new genus of Ectinosomatidae (Copepoda, Harpacticoida) from sublittoral sediments in Ubatuba, São Paulo State, Brazil, including an updated key to genera and notes on Noodtiella Wells, 1965
Kihara, T.C.; Huys, R. (2009). A new genus of Ectinosomatidae (Copepoda, Harpacticoida) from sublittoral sediments in Ubatuba, São Paulo State, Brazil, including an updated key to genera and notes on Noodtiella Wells, 1965. ZooKeys 17: 57-88. dx.doi.org/10.3897/zookeys.17.202
In: ZooKeys. Pensoft: Sofia. ISSN 1313-2989, more
Peer reviewed article  

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Keywords
    Harpacticoida [WoRMS]; Chaulionyx Kihara & Huys, 2009 [WoRMS]; Ectinosomatidae Sars G.O., 1903 [WoRMS]; Noodtiella Wells, 1965 [WoRMS]; Noodtiella Wells, 1965 [WoRMS]; Marine
Author keywords
    Harpacticoida, Ectinosomatidae, Chaulionyx gen. n., Noodtiella, Lineosoma, taxonomy, generic key

Authors  Top 
  • Kihara, T.C.
  • Huys, R., more

Abstract
    Both sexes of a new genus and species of Ectinosomatidae (Copepoda, Harpacticoida) from sublittoral sediments collected on the inner continental shelf in Ubatuba, São Paulo State (Brazil) are described in detail. Chaulionyx gen. n. (type species: C. paivacarvalhoi sp. n.) differs from all known genera in the presence of a conspicuous bifid spine on the prehensile P1 endopod. It can be differentiated from other genera with a prehensile endopod (Halophytophilus Brian, 1919; Bradyellopsis Brian, 1925; Klieosoma Hicks & Schriever, 1985) by the presence of distinctive subrectangular middorsal pores on the urosomites and the unarmed male sixth legs. The genus Lineosoma Wells, 1965 is recognized as a paraphyletic taxon and relegated to a junior subjective synonym of Noodtiella Wells, 1965. Arenosetella pectinata Chappuis, 1954a is removed from its floating position in Ectinosomoides Nicholls, 1945, transferred to the genus Noodtiella as N. pectinata comb. n. and considered the senior subjective synonym of N. toukae Mitwally & Montagna, 2001. Dichotomous keys are provided for the identification of the 18 valid species of Noodtiella and the 21 valid genera of the family Ectinosomatidae. Halophytophilus aberrans Wells & Rao, 1987 is placed species incertae sedis in the family.

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