Abstract
Symphurus hondoensis Hubbs, 1915, originally described only from the holotype taken in 390–542 m in Suruga Bay Japan, has long been considered a junior synonym ofS. strictus Gilbert, 1905, known from waters off Hawaii, Japan, the Philippine Islands, and South Africa. Based on new information from the holotype and a specimen recently captured from deep waters (789–815 m) off Amami-Oshima Island, southern Japan,S. hondoensis is now established as a valid species.Symphurus hondoensis is unique among congeners in having the combination of a 1–2–3 pattern of interdigitation of proximal dorsal pterygiophores and neural spines, 10 abdominal vertebrae, 14 caudalfin rays, 111–113 dorsal-fin rays, 95 anal-fin rays, 59 total vertebrae, 105–106 scales in longitudinal series, blind side nearly as darkly pigmented as the ocular surface, and a black peritoneum. Recognition ofS. hondoensis increases the number of described species ofSymphurus in waters off Japan to three (S. orientalis Bleeker,S. strictus, andS. hondoensis), with at least one more underscribed species occurring in deepwater hydrothermal vent areas off southern Japan.
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Munroe, T.A., Amaoka, K. Symphurus hondoensis Hubbs, 1915, a valid species of western Pacific tonguefish (Pleuronectiformes: Cynoglossidae). Ichthyol Res 45, 385–391 (1998). https://doi.org/10.1007/BF02725191
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DOI: https://doi.org/10.1007/BF02725191