材料于2012年6月在印度尼西亚比通海峡水域采集,调查区共设19站,经对38份样品分析,鉴定出48种水母,其中有2个花水母新种:幼芽伪帽水母PSEudOTIArA gEMMIfErA lIn,XuETHuAng,SP.nOV.和比通真囊水母EuPHySOrA bITungEnSIS Xu,HuAngET guO,SP.nOV.,对新种形态特征进行了绘图和描述,并讨论其与同属其它种主要特征的比较。模式标本保存于国家海洋局第三海洋研究所。Samples of Hydroidomedusa were collected from the Bitung Strait,Indonesia Sea (1.35°-1.50°N,125.10°-125.26°E),during June 2012.Through the analysis of 38 samples,two new species of Anthomedusae are found,i.e.Pseudotiara gemmifera Lin,Xu et Huang,sp.nov.and Euphysora bitungensis Xu,Huang et Guo,sp.nov.All type speciemens are deposited in the Third Institute of Oceanography,SOA.The specific diagnoses of four new species are as follows.Pseudotiara gemmifera Lin,Xu et Huang,sp.nov.(Figs 2-3,5-7) At present time,two species are known in genus Pseudotiara Bouillon,1980.This new species is closed to P.tropica (Bigelow,1912),but differs from them by:1) mouth cruciform,with 4 small lips;2) manubrium short,one-quarter of the bell cavity,conical,cruciform in section,with 4 perradial lobes along the course of the radial canals;3) 4 longitudinal medusa-buds on perradial position of manubrium,extending from the upper 2/3 of the manubrium toward perradial lobes.Etymology.From the Latin gemmifera,meaning gemmifer.The species name refers to the medusa-buds on the perradial positions of the manubrium and lobes.Euphysora bitungensis Xu,Huang et Guo,sp.nov.(Figs 4,8) The new species has 3 rudimentary tentacles and 1 long principal tentacle that differ from others not only in size,but also in structures.These features place this medusa in the family Corymorphidae Allman,1872,genus Euphysora Maas,1905 (Bouillon et al.,2006).Only 24 valid species of Euphysora are known (Huang,1999;Bouillon & Boero,2000;Xu & Huang,2003,2006;Bouillon et al.,2006;Du et al.,2012).This new species can be distinguished from the other species of Euphysora by moniliform tentacles has only ring cnidocysts,which is similar to Euphysora solidonema Huang,1999 and E.annulata Kramp,1928,but differs from them by:1) umbrella with apical projection and apical canal;2) all marginal bulbs without extending to both lateral sides;3) moniliform principal tentacles with a large terminal nematocyst knob;4) manubrium cylindrical about two-thirds as long as the bell cavity;5) three other perradial bulbs without a short filiform tentacles.Etymology.From the Latin bitungensis,referring to the first collected type specimen from the Bitung Strait.中-印尼海洋生态站建设及热带典型海洋生态系统生物多样性研究~
