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First records of Thysanophrys celebica (Platycephalidae) from Kyushu, Japan.
Abstract
Three specimens of Thysanophrys celebica (Platycephalidae), having previously been recorded from the Pacific coast of central Honshu, Shikoku, and the southern Ryukyu Islands in Japanese waters, were collected from Uchinoura Bay on the eastern Osumi Peninsula and Kagoshima Bay of Kagoshima Prefecture, southern Kyushu, Japan. The specimens were described herein as the first records of the species from Kyushu.
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The phylogenetic relationships of Platycephalidae and its related taxa were analyzed. Platycephaloidei and Scorpaenoidei form a monophyletic group supported by two synapomorphies : presence of a backwardly-directed opercular spine and an extrinsic muscle derived from the hypaxial. Platycephaloidei and Plectrogenium, the triglids and peristediids are monophyletic, characterized by a posterior pelvic fossa. Bembradium and Plectrogenium constitute a monophyletic group, which divided initially from remainder of the clade. Next Parabembras, followed by Bembras, branched off the latter. Platycephalidae and its sister group, including the triglids, peristediids and hoplichthyids, have 4 synapomorphies. The triglids, peristediids and hoplichthyids share 15 apomorphies. The peristediids and hoplichthyids constitute a monophyletic group supported by 8 synapomorphies. The newly-defined suborder Platycephaloidei includes the following 7 families : Plectrogeniidae, Parabembridae, Bembridae, Triglidae, Peristediidae, Hoplichthyidae and Platycephalidae. Platycephalidae is redefined, being a monophyletic group supported by 6 synapomorphies, and including 2 subfamilies and 17 genera, 3 of them new.
Four new species of Thysanophrys are described from the Western Indian Ocean (WIO). T. rarita, known from a single specimen taken off Somalia, is provisionally placed in Thysanophrys and is distinguished by its color pattern and number of preocular and suborbital spines. T. tricaudata is described from three specimens taken at SCUBA stations off southwestern Sri Lanka. They differ from other western Indian Ocean (WIO) Thysanophrys in color pattern, lack of ocular flaps, number of dorsal fin spines and scale counts. The remaining two new species are somewhat similar to the widespread Indo-Pacific species, T. chiltonae Schultz (1966). T. randalli is described from specimens taken at the Amirante Islands and Mauritius. It may also be widespread in the Indo-Pacific, but differs from T. chiltonae in nasal spine structure, color pattern, type of iris lappet margin, and in having a much shorter maximum size. T. springeri also appears to be a smaller species than T. chiltonae and, aside from one record off Djibouti, is restricted to Red Sea. It also differs from T. chiltonae in color pattern, in having fewer pectoral rays and fewer scale rows between the second dorsal-fin insertion and the lateral line. Although T. chiltonae is relatively common in the northern Indian Ocean, it does not appear to have entered the Red Sea.
A new platycephalid,Thysanophrys papillaris, is described on the basis of six specimens (78–121 mm SL) collected from the Andaman Sea and off northern Australia (Timor
and Arafura Seas). This new species can be distinguished from other congeners by the following combination of characters:
presence of a single short papilla on upper surface of eye, longer snout, smaller body scales. 11 second dorsal-fin rays and
12 anal-fin rays, presence of four or more suborbital spines usually, branched short iris lappet, ctenoid lateral-line scales
and interopercle not extended posteroventrally.
Checklist of fishes in the Sagami Sea with zoogeographical comments on shallow water fishes occurring along the coastlines under the influence of the Kuroshio Current. Memoirs of the National Science Museum
- H Senou
- K Matsuura
- G Shinohara
Senou, H., K. Matsuura and G. Shinohara. 2006b. Checklist of
fishes in the Sagami Sea with zoogeographical comments on
shallow water fishes occurring along the coastlines under the
influence of the Kuroshio Current. Memoirs of the National
Science Museum, Tokyo, (41): 389-542.