Aboral view (A) and enlarged view of a naked space of the interambulacral area (B) in a reference dried specimen of Diadema found in Ikeda’s collection. KMNH IvR 500788, original specimen No. is IK3. White streak-like remnant can be seen (A, B), and the outer and inner series of primary tubercles initiated on the 3rd and 5th coronal plates, respectively (B). Scales bars = 20 mm (A) and 10 mm (B).

 
 
  Part of: Chow S, Konishi K, Mekuchi M, Tamaki Y, Nohara K, Takagi M, Niwa K, Teramoto W, Manabe H, Kurogi H, Suzuki S, Ando D, Jinbo T, Kiyomoto M, Hirose M, Shimomura M, Kurashima A, Ishikawa T, Kiyomoto S (2016) DNA barcoding and morphological analyses revealed validity of Diadema clarki Ikeda, 1939 (Echinodermata, Echinoidea, Diadematidae). ZooKeys 585: 1-16. https://doi.org/10.3897/zookeys.585.8161