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Abstract
Four new and four known species of soil nematodes belonging to the superfamily Tylencholaimoidea Filipjev, 1934 are reported from China. Tylencholaimus orientalis sp. nov. is characterized by having a 0.45–0.61‐mm body; a 5–6‐µm odontostyle; a monoprodelphic genital system with a short post‐uterine sac; and a conoid to hemispheroid tail. Tylencholaimus sinensis sp. nov. is characterized by having a 0.76–0.82‐mm body; a 7–7.5‐µm odontostyle; an amphidelphic genital system; a conoid to hemispheroid tail; and males with 32‐µm spicules and three ventromedians. Proleptonchus sinensis sp. nov. is characterized by having a 1.4–1.7‐mm body; wide amphids; 8–9‐µm odontostyle; a monoprodelphic genital system, the posterior branch with well‐developed uterus and oviduct rudiments; slender and slightly arcuate spicules; and a short conoid tail with thick cuticle at terminus. Dorylaimoides alpinus sp. nov. is characterized by having a 1.4–1.5‐mm body; a lip region offset by a depression; a 12–13‐µm odontostyle; an arcuate odontophore; an amphidelphic genital system with transverse vulva; and a tail that gradually tapers to a blunt terminus.
Acknowledgements
The authors thank Zhili Feng, Tashi Tsering and the staff of Ailaoshan Station for Forest Ecosystem Studies for their help in field sampling. This study was financially supported by Ministry of Education Key Laboratory for Biodiversity Science and Ecological Engineering. The authors are thankful to the referees for their constructive suggestions, which have greatly improved the manuscript.