<i>Helicotylenchus</i> species (Nematoda: Tylenchida) from native vegetation and undisturbed soils in New Zealand

Abstract

Abstract Eight Helicotylenchus species were collected from native vegetation and undisturbed soils; seven are new records for New Zealand. H. erythrinae and H. lissocaudatus were present at 12 and 10 sites, respectively, H. dihystera at three sites, and H. digonicus and H. minzi at two sites; H. exallus, H. paxilli , and H. depressus were restricted to a single site or host species. H. depressus males are described for the first time. Illustrations, key features, and measurements of representative populations are given for each species. A key to the 13 Helicotylenchus species known from New Zealand is provided.