Devibursaphelenchus wangi sp n. (Nematoda: Ektaphelenchinae) feeding on Aphelenchoides sp.

摘要

Devibursaphelenchus wangi sp. n. is described and figured. The new species was isolated from pine packaging wood from the USA and inspected in Ningbo harbour, China in 2009. The new species is characterised by relatively slender body (a = 36.5 and 37.1 for males and females, respectively); three lines in the lateral field; stylet with relatively wide lumen but lacking basal knobs; vulval flap absent, very short post-uterine sac; non-functional and indistinct female rectum and anus; spicules relatively small (14.2-15.6 mu m) with a flattened cucullus; two pairs of caudal papillae. The new species is morphologically close to D. eproctatus and D. hunanensis and can be distinguished by shape and size of spicules and smaller stylet. The separate species status is supported by ITS-RFLP patterns and molecular phylogenetic analysis based on ITS 1/2 and partial LSU sequences, which revealed that the new species is close to D. hunanensis. The feeding habit of the new species is also observed and discussed.