Stolonifera from shallow waters in the north-western Pacific: a description of a new genus and two new species within the Arulidae (Anthozoa, Octocorallia)

Abstract. A new genus and two new species of stoloniferous octocorals (Alcyonacea) within the family Arulidae are described based on specimens collected from Okinawa (Japan), Palau and Dongsha Atoll (Taiwan). Hanagen. n. is erected within Arulidae. Hanahanagasasp. n. is characterised by large spindle-like table-radiates and Hanahanatabasp. n. is characterised by having ornamented rods. The distinction of these new taxa is also supported by molecular phylogenetic analyses. The support values resulting from maximum likelihood and Bayesian inference analyses for the genus Hana and new species H.hanagasa and H.hanataba are 82/1.0, 97/1.0 and 61/0.98, respectively. Hanahanagasasp. n. and Hanahanatabasp. n. are the first arulid records for Okinawa, Palau, and Dongsha Atoll, and represent species of the second genus within the family Arulidae.