The species diversity, distribution, and morphological features of centrohelid heliozoans (Centroplasthelida) (Haptista: Centroplasthelida Febvre-Chevalier et Febvre, 1984) from freshwaters of Central and Southern Vietnam have been studied using scanning electron microscopy (SEM). Twelve species, belonging to Acanthocystidae, Choanocystidae, Pterocystidae, Raphidiophryidae, and Raphidocystidae families, have been found. Eleven species are new for Vietnam. Illustrated descriptions of species found are provided. The morphology of investigated centrohelids mainly corresponds to published data; however, some differences have been shown. The diversity of heliozoans in Vietnam and other regions has been discussed.

中文翻译：

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越南中部和南部淡水的中心螺旋日生动物新物种（Centroplasthelida）

越南中部和南部的淡水中心类螺旋藻（Centroplasthelida）（Haptista：Centroplasthelida Febvre-Chevalier et Febvre，1984）的物种多样性，分布和形态特征已使用扫描电子显微镜（SEM）进行了研究。已发现十二种，分别属于棘藻科，棘藻科，翼藻科，棘皮科和棘藻科。越南有11种是新的。提供了所发现物种的图解说明。研究的中心螺旋体的形态主要对应于已发表的数据。但是，已经显示出一些差异。已经讨论了越南和其他地区的Heliozoans的多样性。