An Integrated Approach for Synonymization of with . (Nematoda: Hoplolaimidae) Reveals High Intraspecific Mitogenomic Variation.

is a widely distributed, economically important plant-parasitic nematode group whose species-level identification relies largely on limited morphological characters, including character-based tabular keys and molecular data of ribosomal and mitochondrial genes. In this study, a combined morphological and molecular analysis of three populations of from Belgium, Poland, and the Netherlands revealed important character variations of this species, leading to synonymization of with and a high nucleotide variation within gene sequences in these populations. Additional Illumina sequencing of DNA from individuals of the Dutch population revealed two variants of mitogenomes, each approximately 23 Kb in size, differing by approximately 9% and containing 11 protein-coding genes, 2 ribosomal RNA genes, and as many as 29 transfer RNA genes. In addition to the first representative whole-genome shotgun sequence datasets of the genus , this study also provides the full-length mitogenome and the ribosomal DNA sequences of .