New Species of Stargazers (Uranoscopidae) From the Arafura Sea
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Species of Stargazers (Uranoscopidae) From the Arafura Sea A. M. Prokofieva, b, * a
Institute of Ecology and Evolution, Russian Academy of Sciences (IEE RAS), Moscow, Russia b Institute of Oceanology, Russian Academy of Sciences (IO RAS), Moscow, Russia *e-mail: [email protected] Received January 31, 2020; revised February 14, 2020; accepted April 3, 2020
Abstract—Uranoscopus arafurensis sp. nov. from the Arafura Sea was described. It differs from all species of the genus by a combination of the following characters: the scale cover in the predorsal region is well developed up to the posterior edge of the cranial roofing bones; there is a notch in the upper posterior edge of the pectoral fin; two spines on the inner edge of the supracleithrum; prelingual filament is short and wide; the coloration of the dorsal surface of the body is monotonous brown, the pectoral fin is brown, its lower half is pigmented much more intensely than the upper one. A comparison of the new species with other species of the genus was given. Paraphily of Uranoscopus species with a notch of the upper posterior edge of the pectoral fin was indicated. Keywords: Uranoscopus, new species, Indo-Australian Archipelago DOI: 10.1134/S0032945220050082
INTRODUCTION Fishes of the family Uranoscopidae are represented in the world fauna by seven genera and 56 species, of which 26 species belong to the genus Uranoscopus Linnaeus, 1758 (Fricke et al., 2020). Species of this genus inhabit the East Atlantic (including the Mediterranean and Black Seas) and the Indo-West Pacific eastward to Oceania, reaching maximum species diversity in the waters of the Indo-Australian Archipelago. The taxonomy of the genus remains insufficiently developed, and although most of the species were described as early as the 19th century, discoveries of new species for science are not uncommon even now (Randall and Arnold, 2012; Fricke, 2018). The paper is devoted to the description of another new species, which differs well from the previously known ones by a set of characters.
pectoral, ventral and caudal fins, respectively; vert.— number of vertebrae (including urostyle); SL—standard length; MNHN—Museum national d’histoire naturelle, Paris, France. For comparison, 40 specimens of U. affinis Cuvier, 1829 SL 40–160 mm, 8 specimens of U. chinensis Guichenot, 1882 SL 97– 180 mm, 5 specimens of U. japonicus Houttuyn, 1782 SL 140–220 mm, and 35 specimens of U. kishimotoi Fricke, 2018 SL 40–130 mm from waters of Japan, China, Vietnam, and Indonesia stored in the collection of the Institute of Oceanology RAS (IO RAS, Moscow) and Zoological Institute RAS (ZIN RAS, St. Petersburg), and 2 specimens of U. albesca Regan, 1915 SL 52 and 92 mm (ZIN No. 41008, Dakar region) were studied. Data for U. bauchotae Brüss, 1987, U. brunneus Fricke, 2018, U. dollfusi Brüss, 1987 and U. kaianus Günther, 1880 were taken from Brüss (1987), Kishimoto (1984, 2001), and Fricke (2018).
MATERIALS AND METHODS The meristic and morphometric characters were assessed according to Brüss (1987) with the foll
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