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The maskrays are a genus, ''Neotrygon'', of stingrays in the family Dasyatidae, native to the Indo-West Pacific. They are so named because of a distinctive color pattern around their eyes, resembling a mask. The species in this genus were originally placed in the genus ''Dasyatis'' by most authors. However, recent morphological and molecular analyses have conclusively showed that they represent a distinct group, and so the genus ''Neotrygon'' was resurrected for them. Aside from their mask-like color pattern, the maskrays are variable in coloration and can be plain or ornate. Their pectoral fin discs are largely smooth, with a single row of thorns along the dorsal midline. The mouth is small with two central papillae and a row of enlarged, long-cusped teeth halfway along the upper jaw on both sides. The nasal curtain, formed by the merging of the nasal flaps, is long and narrow. The tail is very short with well-developed dorsal and ventral fin folds and a filamentous tip, and is banded black and white past the stinging spine. In addition, ''Neotrygon'' species also differ from other stingrays in their buccal and skeletal morphology, as well as in the CO1 gene. ==Species== * ''Neotrygon annotata'' (Last, 1987) (Plain maskray) * ''Neotrygon kuhlii'' (J. P. Müller & Henle, 1841) (Blue-spotted stingray) * ''Neotrygon leylandi'' (Last, 1987) (Painted maskray) * ''Neotrygon ningalooensis'' Last, W. T. White & Puckridge, 2010 (Ningaloo maskray) * ''Neotrygon picta'' Last & W. T. White, 2008 (Peppered maskray) * ''Neotrygon trigonoides'' Castelnau, 1873 (New Caledonian maskray) 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Maskray」の詳細全文を読む スポンサード リンク
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