An annotated checklist of the main representatives of meiobenthos from inland water bodies of Central and Southern Vietnam. I. Roundworms (Nematoda) Author Gusakov, Vladimir A. Author Gagarin, Vladimir G. text Zootaxa 2017 4300 1 1 43 journal article 32584 10.11646/zootaxa.4300.1.1 7eb2410e-8578-432a-88f8-bc129d0a5b08 1175-5326 837117 5FA0C659-9C52-4ABB-9CB6-1FB5CDDDF9F8 Family Hoplolaimidae Filipjev, 1934 124. Helicotylenchus sp. —{22} (5, 0, 0, 0; 1 ) Population structure and abundance. Single female. Ecology and distribution. The majority of representatives of the genus are edaphobionts, some species occur in water bodies as well. Presumably, certain species may dwell in water constantly, parasitizing aquatic plants ( Bert & Borgonie 2006 ). Remarks. The genus Helicotylenchus is the richest in Tylenchina (about 200 valid species) ( Andrássy 2007 ). In the water bodies of Vietnam, five species have been recorded ( Nguyen & Nguyen 2005 ). We failed to determine the species identity of this female since all features are not clearly visible on the mount.