Perkinsozoa is an exclusively parasitic group within the alveolates and infections have been reported from various organisms, including marine shellfish, marine dinoflagellates, freshwater cryptophytes, and tadpoles. Despite its high abundance and great genetic diversity revealed by recent environmental rDNA sequencing studies, Perkinsozoa biodiversity remains poorly understood. During the intensive samplings in Korean coastal waters during June 2017, a new parasitoid of dinoflagellates was detected and was successfully established in culture. The new parasitoid was most characterized by the presence of two to four dome-shaped, short germ tubes in the sporangium. The opened germ tubes were biconvex lens-shaped in the top view and were characterized by numerous wrinkles around their openings. Phylogenetic analyses based on the concatenated SSU and LSU rDNA sequences revealed that the new parasitoid was included in the family Parviluciferaceae, in which all members were comprised of two separate clades, one containing Parvilucifera species (P. infectans, P. corolla, and P. rostrata), and the other containing Dinovorax pyriformis, Snorkelia spp., and the new parasitoid from this study. Based on morphological, ultrastructural, and molecular data, we propose to erect a new genus and species, Tuberlatum coatsi gen. n., sp. n., from the new parasitoid found in this study. Further, we examined and discussed the validity of some diagnostic characteristics reported for parasitoids in the family Parviluciferaceae at both the genus and species levels.

Perkinsozoa是肺泡内的唯一寄生物，已经报道了各种生物的感染，包括海洋贝类，海洋鞭毛藻，淡水隐生植物和t。尽管最近的环境rDNA测序研究显示出其丰富性和巨大的遗传多样性，但Perkinsozoa生物多样性仍然知之甚少。在2017年6月对韩国沿海水域的密集采样中，发现了一种新的寄生鞭毛的鞭毛藻，并已在养殖中成功建立。新的寄生虫的最大特征是在孢子囊中存在两到四个圆顶形的短胚芽管。在顶视图中，打开的胚芽管为双凸透镜状，其特征是在其开口周围有许多皱纹。Parvilucifera物种（P。infectans，P。花冠，和P。喙），另含Dinovorax膜虫，Snorkelia属，并从该研究中的新寄生。根据形态，超微结构和分子数据，我们建议建立一种新的属和种，金丝桃属。n。，sp。n。，来自本研究中发现的新寄生虫。此外，我们检查和讨论了在属和物种水平上报告的Parviluciferaceae科中寄生虫的某些诊断特征的有效性。