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A new species of sponge-inhabiting barnacle Neoacasta (Archaeobalanidae, Acastinae) in Kyushu, Japan

In: Crustaceana
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  • 1 Doctoral Degree Program in Marine Biotechnology, National Sun Yat-sen Universityand Academia Sinica, Kaohsiung 80424, Taiwan
  • | 2 Biodiversity Research Center, Academia Sinica, Taipei 11529, Taiwan
  • | 3 Institute of Natural and Environmental Sciences, University of Hyogo, 6 Yayoigaoka, Sanda, Hyogo, 669-1546, Japan
  • | 4 Museum of Nature and Human Activities, Hyogo, 6 Yayoigaoka, Sanda, Hyogo, 669-1546, Japan
  • | 5 White Sea Biological Station, Biological Faculty, Moscow State University, 119991, Moscow, Russia
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Abstract

This paper describes a new species of sponge-inhabiting barnacle, Neoacasta liui sp. nov., collected in Fukuoka, Kyushu, Japan. In the present study we used both the morphological examination and DNA barcode (cytochrome c oxidase I gene) to distinguish this new species from acastine species including its congeners from Neoacasta Kolbasov, 1993. Neoacasta liui sp. nov. is similar to Neoacasta glans (Lamarck, 1818) in shell morphology, but the divergence in COI gene between them reached inter-specific differences. N. liui sp. nov. is characterized by externally latticed, narrow scutum, beak-shaped tergum with wider spur, and lack of six inwardly prominent teeth on margin of basis. N. glans having an Indo-West Pacific distribution may represent a complex of cryptic species.

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