Fig. 5.

Phylogenetic relationships of the species from “bicornutum” group and other related species of Steinernema based on analysis of D2-D3 expansion segments of the 28S rDNA. Steinernema nepalense and S. scapterisci was used as outgroup taxon. The percentage of replicate trees in which the associated taxa clustered together in the bootstrap test (10,000 replicates) are shown next to the branches. Branch lengths indicate evolutionary distances and are expressed in the units of number of base differences per site.