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Description de quatre nouvelles espèces et de quatre populations de Rotylenchus (Nematoda: Hoplolaimidae). Proposition d'une clé tabulaire

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Summary - Description of four new species and four populations of Rotylenchus (Nematoda: Hoplolaimidae). Proposal a tabular key - Four new species from France are described and figured: Rotylenchus ascalpi sp. n., characterised by an annulated, rounded and set off lip region; R. corsicus sp. n., characterised by a rounded, annulated lip region; R. echelimae sp. n., characterised by a truncated, smooth lip region; R. provincialis sp. n., characterised by a conoïd rounded, annulated lip region and an unannulated tail terminus. The measurements, figures and main morphological differences in relation to the original descriptions of four other populations are given: Rotylenchus capensis , R. eximius, R. magnus jaeni and R. magnus magnus. An emended diagnosis of the genus, a list of valid species and species inquirendae vel dubiae and a tabular key to species are proposed.

Quatre nouvelles espèces de Rotylenchus sont décrites et figurées: Rotylenchus ascalpi sp. n., caractérisé par une région céphalique arrondie, comportant de cinq à sept anneaux; R. corsicus sp. n. caractérisé par une région céphalique arrondie, annelée; R. echelimae sp. n., caractérisé par une région céphalique tronconique non annelée; R. provincialis sp. n., caractérisé par une région céphalique annelée, conoïde-arrondie et par l'extrémité caudale lisse. Pour des populations de quatre autres espèces, Rotylenchus capensis, R. eximius, R. magnus jaeni, R. magnus magnus, les mensurations, les figures et les différences morphologiques majeures par rapport aux descriptions originales sont données. Une diagnose amendée du genre, la liste des espèces valides et des species inquirendae vel dubiae ainsi qu'une clé tabulaire pour les espèces sont proposées.

Affiliations: 1: INRA, Unité Santé Végétale & Environnement, B. P.2078, 06606 Antibes Cedex, France; 2: IRD, Laboratoire de Nématologie, B.P.1386, Dakar,Sénégal


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