Description: Rab (Croatia)
It has narrow and high superomarginal plates, laterally covered with scales and small spines (on vertical face). Every superomarginal plates usually is equipped with one strong spine, usually sharp but irregularly shaped, slightly flattened laterally, often yellow or orange but rarely off white. The superomarginal spines are (more or less) far from the inside edge of plates and they leave on top, on the base of them, a small bare area that it is white if there is a strong spine in the plate (usually in the plates near the disc) or blue-violet if the plate has very small spine or no spine (usually towards the tip of arms).
Author: Pillon, Roberto ()
JPG file - 256.42 kB - 800 x 600 pixels [more]
added on 2012-02-11 - 100 views
Astropecten platyacanthus (Philippi, 1837)