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Description of Pseudaphelenchuszhoushanensis n. sp. (Tylenchina: Aphelenchoididae) found in the wood of Pinus thunbergii at Zhoushan Islands, Zhejiang Province, China

In: Nematology
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  • 1 1Department of Plant Pathology, Nanjing Agricultural University, Nanjing 210095, P.R. China
  • | 2 2Nematology Research Unit, Department of Biology, Ghent University, Ledeganckstraat 35, B-9000 Ghent, Belgium
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Pseudaphelenchus zhoushanensis n. sp. was isolated from a dead Pinus thunbergii at Changgang Mountain, Zhoushan Islands, Zhejiang Province, China. It is characterised by the small to medium length body, cuticle slightly annulated, presence of three lateral lines, stylet 9.0-10.7 μm with small but conspicuous basal knobs, excretory pore located from same level as the metacorpus to slightly anterior to metacorpus, true bursa surrounding entire tail but inconspicuous, male tail conical with a single mucron, spicule with distinct condylus and rostrum strongly arcuate to a pointed end, female tail conical with annulation, strongly ventrally bent in distal part of tail, with terminus bluntly pointed or finely mucronate. Phylogenetic analyses using sequences of the18S and 28S D2-D3 regions of rDNA confirmed the status of P. zhoushanensis n. sp. as a new species. Combining the molecular phylogenetic analyses, morphology and biology of P. zhoushanensis n. sp. and Tylaphelenchus jiaae indicates that T. jiaae is a member of Pseudaphelenchus to which it is herein transferred as P. jiaae n. comb. (= T. jiaae).

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