TWO NEW SPECIES OF THE GENUS ACTINONEMA COBB 1920 (NEMATODA, CHROMADORIDA) FROM THE COAST OF VIETNAM

Two new species of the genus Actinonema Cobb 1920 found in sediments at the coast of Vietnam are described and illustrated. Actinonema longicaudatoides sp. n. is close to A. longicaudatum (Steiner 1918), but differs from it in the longer and slender tail, shorter gubemaculum and the presence of expanded cuticle rings before cloaca in males. A. parvum sp. n. differs from A. smolae Muthumbi, Vincx 1998 in the shorter and thicker body, relatively longer pharynx, shorter sephalic setae and longer spicules. Adeuchromadora megamphida Boucher, Bovee 1971 is transferred to the genus Actinonema as the independent valid species Actinonema megamphidum (Boucher, Bovee 1971) comb. n. of this genus.