Fig 5. <i>Ophiacantha kokusai</i> sp.nov., paratype NSMT E–7596 from Sagami Bay, 4.5 mm dd, external views and details, SEM.
<dl><dd>A, dorsal view; B, ventral view; C,D, thorny adoral shield papilla with central spine and numerous fine thorns; E, dental plates; F, dorsal spine; G, third lateral arm plate (first free proximal segment) closely adjacent to the disk showing striated elevation near articulations; H, arm spine articulations; I, proximal vertebra, dorsal view; J, middle vertebra, dorsal view; K, proximal vertebra, distal view; Scales bars, 0.05 (I), 0.1 mm (C, D, E, F, G, H, J, K), 1 mm (A, B). ap, adoral shield papilla; as, adoral shields; gs, genital slit; op, oral papillae; os, oral shield; vc, vertebral condyle of proximal vertebrae (zygospondylous articulation).</dd></dl>
Martynov, A., Ishida, Y., Irimura, S., Tajiri, R., O’Hara, T.D., Fujita, T. 2015. When Ontogeny Matters: A New Japanese Species of Brittle Star Illustrates the Importance of Considering both Adult and Juvenile Characters in Taxonomic Practice. PLoS ONE. 10(10): e0139463.
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