Steinernema tami sp n. (Rhabditida : Steinernematidae) from Cat Tien Forest, Vietnam

Steinernema tami sp. n. from Cat Tien Forest, Vietnam has characteristics o f species in the "carpocapsae" group (IJ3 body length < 600 mu m). It can b e distinguished from species in this group by the mean IJ3 body length (530 mu m), which is shorter than that of S. kushidai, S. scapterisci, S. carpo capsae, and S, abbasi (589, 572, 558, and 541 mu m) but longer than that of S. rarum, S. ritteri, and S. siamkayai (511, 510, and 446 mu m). In the ma le, the spicule of the new species (77 mu m) is shorter than that of S. sca pterisci (83 mu m) but longer than that of all other species in the group ( < 75 mu m); ratio SW (spicule length/anal body width) of the first generati on male (2.0) is smaller than that of S. scapterisci (2.5) but greater than that of other species (< 1.8). Steinernema tami sp. n, is further differen tiated from other species in the group by the profiles of at least 3-4 enzy mes in rDNA-RFLP analysis.