Genus Xiphinema
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ORDER DORYLAIMIDA
Family Longidoridae
Genus Xiphinema
Genus Xiphinema Cobb, 1913
“Spear greatly attenuated with extensions bearing elongate, basal flanges. Spear guiding ring deep in the pharynx. Basal part of esophagus 2-4 times as long as body width. Vulva transverse with muscular labia. Ovaries 1 or 2. Tails hemispheroid to elongate cylindroid. Males often unknown or rare. Species are not assigned to subgenera as outlined by Cohn and Sher, 1972.” From Powers and Mullin website http://nematode.unl.edu/
References:
Powers T. and P. Mullin. Plant and Insect Parasitic Nematodes. University of Nebraska Nematology Website. http://nematode.unl.edu/