Validity of Abudefduf caudobimaculatus Okada and Ikeda 1939 and synonymies of Abudefduf vaigiensis (Quoy and Gaimard 1825) (Perciformes: Pomacentridae)


Abudefduf caudobimaculatus Okada and Ikeda 1939, having long been regarded as a junior synonym of Abudefduf vaigiensis (Quoy and Gaimard 1825), is herein redescribed as a valid species on the basis of the holotype and 77 additional specimens. Abudefduf caudobimaculatus can be distinguished from A. vaigiensis in having 11–13 (modally 12) dorsal-fin soft rays, 4 scale rows above the lateral line, 2½ scale rows between the middle of the spinous portion of the dorsal-fin base and lateral line, 3–4 (4) scale rows on the cheek, scales always present on the anteroventral region of the head, eleventh and last dorsal-fin spines and pectoral-fin length 15.5–18.4%, 17.1–20.6%, and 33.5–39.9% of SL, respectively, two black spots on the caudal-fin base, anteriormost bar descending to behind the pectoral-fin base, 0–1 tubed lateral-line scales on the fourth vertical bar, and third to seventh (usually fifth or sixth) dorsal-fin soft ray base at the anterior margin of the fourth vertical bar. Synonymies of A. vaigiensis are discussed with designations of lectotypes for Glyphisodon vaigiensis and Glyphisodon rahti.

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We express our gratitude to K. Hagiwara (YCM), H. Senou (KPM), J. Maclaine and R. Britz (BMNH), and P. Pruvost, R. Causse, Z. Gabsi, L. M. Duque Vélez and P. Béarez (MNHN) for opportunities to examine specimens, H. Senou (KPM) for providing a color photograph of a fresh specimen of A. caudobimaculatus, H. Hata (KAUM) for providing literature, S. Dossou for kindly translating literature from French into English, W.-J. Chen (National Taiwan University, Taiwan) for identifications of species used in his molecular paper, G. S. Hardy (Ngunguru, New Zealand) for reading the manuscript and providing help with English, and K. Koeda, T. Yoshida, T. Inaba, B. Jeong, S. Chungthanawong, K. Eguchi, A. Bandai, K. Kawama and other students, and Y. Haraguchi, M. Itou, T. Uejo and other volunteers of KAUM for their curatorial assistance. The first author is especially appreciative of M. Matsunuma (BSKU) and S. Tashiro, H. Iwatsubo and Y. Fukui (KAUM) for sharing their knowledge of taxonomy during this study and also gratefully acknowledge a scholarship under the auspices of the Program for Research and Innovation in Science and Technology (RISET-Pro), provided by the Ministry of Research, Technology and Higher Education of the Republic of Indonesia. This study was supported in part by JSPS KAKENHI Grant Numbers JP26241027, JP24370041, JP23580259 and JP26450265; the JSPS Core-to-Core Program, “Research and Education Network on Southeast Asian Coastal Ecosystems”; the “Coastal Area Capability Enhancement in Southeast Asia Project” of the Research Institute for Humanity and Nature, Kyoto, Japan; the “Biological Properties of Biodiversity Hotspots in Japan” project of the National Museum of Nature and Science, Tsukuba, Japan; and the “Establishment of Research and Education Network on Biodiversity and Its Conservation in the Satsunan Islands” project of Kagoshima University adopted by the Ministry of Education, Culture, Sports, Science and Technology, Japan.

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Correspondence to Kunto Wibowo.

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This article was registered in the Official Register of Zoological Nomenclature (ZooBank) as 51B3F807-2DA4-4B43-8B40-DF743421B1D6.

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Wibowo, K., Toda, M. & Motomura, H. Validity of Abudefduf caudobimaculatus Okada and Ikeda 1939 and synonymies of Abudefduf vaigiensis (Quoy and Gaimard 1825) (Perciformes: Pomacentridae). Ichthyol Res 65, 78–91 (2018).

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  • Abudefduf quadrifasciatus
  • Abudefduf quinquilineatus
  • Abudefduf sexfasciatus
  • Chaetodon tyrwhitti
  • Glyphisodon rahti
  • Glyphisodon vaigiensis