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Description of Myolaimus mycophilus Slos & Bert sp. n. (Rhabditida: Myolaimidae)

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Myolaimus mycophilus Slos & Bert sp. n. was isolated from mushrooms from different locations in Belgium and cultured on nutrient agar seeded with Escherichia coli OP50. Myolaimus mycophilus sp. n. is characterised by a unique combination of the following characters: adults with lateral fields not differentiated, buccal cavity triangular, cheilostom anisomorphic, female with a post-vulval uterine sac as long as the corresponding body diam., wrinkled eggshell, male with seven pairs of genital papillae, cloacal aperture covered by a trapezoidal cloacal flap and with a single ventral papilla at its base. The new species and M. goodeyorum Andrássy, 1984 were molecularly characterised by sequencing the 18S and D2-D3 28S expansion segments of rDNA. Phylogenetic relationships were reconstructed based on concatenated analyses and the phylogenetic placement of Myolaimus, an intriguing genus within the Rhabditida, is discussed.

Affiliations: 1: Nematology Research Unit, Ghent University, Department of Biology, K.L. Ledeganckstraat 35, 9000 Ghent, Belgium

*Corresponding author, e-mail:

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