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''Phyllacanthus imperialis'', also known as the Sputnik urchin, imperial lance urchin, imperial sea urchin, imperial urchin, pencil sea urchin, lance urchin, knobby sputnik sea urchin, mine urchin, and land mine sea urchin, is a sea urchin in the family Cidaridae.〔 It has distinctive thick, blunt spikes. The test is brown or black. The spikes vary in colour. This species emerges at night to eat invertebrates and sponges.〔(【引用サイトリンク】title=NaturaLista · Imperial Lance Urchin (Phyllacanthus imperialis) )〕 During the day, it tends to remain hidden in holes in the coral reef. ''Phyllacanthus imperialis'' is found throughout the Indo-Pacific region.〔(【引用サイトリンク】title=Imperial Sea Urchin )〕 ==Synonyms== *''Cidaris fustigera'' (A. Agassiz, 1963) *''Cidaris imperialis'' (Lamarck, 1816) *''Cidaris imperialis fustigera'' (A. Agassiz, 1863) *''Cidarites imperialis'' Lamarck, 1816 *''Leiocidaris imperialis'' (Lamarck, 1816) *''Phyllacanthus fustigera'' A. Agassiz, 1863 *''Phyllacanthus fustigerus'' A. Agassiz, 1863 *''Rhabdocidaris imperialis'' (Lamarck, 1816) 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「Phyllacanthus imperialis」の詳細全文を読む スポンサード リンク
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