DESCRIPTION OF TWO NEW SPECIES OF FREE-LIVING NEMATODES: <i>HALICHOANOLAIMUS STAGNALIS </i>SP. NOV. AND <i>ACTINONEMA DOLICHURUM </i>SP. NOV. FROM ARTIFICIAL RESERVOIRS IN VIETNAM
Illustrated description of two species of free-living nematodes, Halichoanolaimus stagnalis sp. nov., Actinonema dolichurum sp. nov., found in ground of artificial reservoirs in Vietnam. H. stagnalis sp. nov. differs from three relatives to species: H. ovalis Ditlevsen, 1921, H. unicus Inglis, 1968 и H. sonorus Belogurov et Fadeeva, 1980 by another numbers and location of male supplements and less number of turns of amphidial fovea. Actinonema dolichurum sp. nov. morphological similar to A. parvum Gagarin, 2015 and A. fidatum Vitiello, 1970, but differs from both species by thicker body, shorter cephalic setae and longer and slender tail.