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Evasterias troscheli
''Evasterias troscheli'' is a species of starfish in the family Asteriidae. Its common names include the mottled star, false ochre sea star and Troschell's true star. It is found in Kamchatka and the north western coast of North America.
==Description==
The mottled star is a large starfish with a radius of up to . It has a small disc and five long narrow arms often turned up at the tip. The widest point of the arms is a little distance away from the edge of the disc. The aboral (upper) surface of the disc is covered with a network of calcareous plates with spines about long surrounded by smaller spines and crossed and straight pedicellariae, minute pincer-like structures with 3 jaws. There is an irregular line of white-tipped spines running down the centre of the arms and the whole upper surface is rough to the touch. On the oral (lower) surface a long ambulacral groove stretches from the central mouth to the tip of each arm with four rows of tube feet and clumps of pedicellariae and spines on either side. The colour is very variable and includes plain or mottled shades of orange, brown, greenish-grey, bluish-grey and pale purple. The outer edges of the arms often have a contrasting coloured rim and the underside is pale brown.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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