Hypothesis of the phylogenetic relationships of Amblydorylaimus isokaryon (Loof, 1975) and Pararhyssocolpus paradoxus (Loof, 1975), gen. n. comb. n. based on 28S rDNA D2-D3 inferred from a Bayesian analysis using GTR+G model and midpoint rooting of the tree. Posterior probabilities higher than 0.8 are presented. Species coloured according the classification of Andrássy (2009a) and Peña-Santiago and Álvarez-Ortega (2014): dark blue – fam. Aporcelaimidae, light blue – fam. Actinolaimidae, dark green – fam. Dorylaimidae, light green – fam. Thornenematidae, red – fam. Qudsianematidae, yellow – fam. Swangeriidae, violet – fam. Belondiridae. *For abbreviations of localities see Table 1