Abstract

Descriptions and illustrations are presented for a new genus and two new species of free-living nematodes found in sediments of four artificial reservoirs for shrimp aquaculture. Paradaptonema gen. n. is morphologically close to Daptonema Cobb, 1920, but it has three glands around cardia that are absent in Daptonema, as well as a peculiar structure of the reproductive apparatus in males. Paradaptonema securum gen. n., sp. n. is characterized by a finely annulated cuticle, relatively long external labial setae, the presence of a postvulvar cell, and a peculiar shape of spicules and gubernacula. Thalassomonhystera longisoma sp. n. is morphologically close to Th. minor Gagarin, Nguyen Thi Thu, 2008 and Th. elegans Gagarin, Nguyen Vu Thanh, 2013, but differs from them in the length and slenderness of the body, as well as in the size of the external labial bristles and spicules.

中文翻译：

---

越南人工水库的新属和两种新生活线虫（线虫，Monhysterida）

摘要

介绍和图示说明了在四个用于虾类养殖的人工水库沉积物中发现的一个新属和两个新物种的自由生活线虫。Paradaptonema根。。在形态上与Daptonema Cobb（1920）相近，但在Daptonema中不存在card门周围的三个腺体，并且雄性生殖器官具有特殊的结构。Paradaptonema Securum公司根。n。，sp。。其特征是角质层细小，外唇巩膜相对长，外阴后细胞的存在以及针状和伞形的奇特形状。Thalassomonhystera longisoma SP。。在形态上接近Th。次要加加林，阮氏星期四，2008年，Th。线虫加加林，阮武清，2013年，但在身体的长度和细长度以及外阴唇硬毛和针的大小方面与它们不同。