Morphological features of Sphenopus exilis sp. n. A Cross section of holotype NSMT-Co1576 through the actinopharynx showing the mesenterial arrangement and dense sand encrustations B Well-developed mesogleal sphincter muscles visible on a hand-cut longitudinal section of the holotype NSMT-Co1576 C Comparison of polyp shape between S. exilis sp. n. NSMT-Co1577 and S. marsupialis (from Brunei, refer to Reimer et al. 2012).

 
 
  Part of: Fujii T, Reimer JD (2016) A new solitary free-living species of the genus Sphenopus (Cnidaria, Anthozoa, Zoantharia, Sphenopidae) from Okinawa-jima Island, Japan. ZooKeys 606: 11-24. https://doi.org/10.3897/zookeys.606.9310