Description of Longidorus diadecturus n. sp. (Nematoda: Longidoridae), a vector of the peach rosette mosaic virus in peach orchards in southwestern Ontario, Canada

Abstract

Longidorus diadecturus n. sp., a virus vector found in peach orchards in southwestern Ontario, is described and illustrated. The most distinguishing feature of the species is the posterior position of the stylet guiding ring (50–64 μm posterior to head apex). It differs from closely related species with a posterior stylet guiding ring by the shape and length of the corpal mucro (sagittate, 1–2 μm), the length of the odontophore (55–66 μm), the expanded, set-off head, and the anteriorly located vulva (44–48%). The body lengths and the tail shapes and sizes are also diagnostic for larval stages.