Fig 9. <i>Ophiacantha rhachophora</i> H.L. Clark, 1911, holotype USNM 25630 from Gotō Islands (ca. 100 km W to Nagasaki Prefecture), 5.6 mm dd, external views.
<dl><dd>A, dorsal view; B, ventral view; C, proximal arm segments, dorsal view; D, proximal arm segments, ventral view; E, proximal arm segments, lateral view, SEM; F, oral frame, details. as, adoral shields; gs, genital slit; j, jaws; op, oral papillae; os, oral shield; red asterisks indicate the former position of the adoral shield papillae during early ontogeny (i.e. absence of the distalmost oral papillae at the adoral shields in adult state). Scales bars, 1 mm (A–F).</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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