Les nématodes phytoparasites du genre Xiphinema (Longidoridae) en Guyane et en Martinique.

This is the first study of the genus Xiphinema in Martinique and Guiana. Thirteen species (X. brasiliense, X. brevicolle, X. elongatum, X. ensiculiferum, X. filicaudatum labratum subsp. n., X. ifacolum, X. krugi, X. macrostylum, X. oryzae, X. paritaliae, X. riocaquetae, X. setariae, X. surinamense) are briefly described and illustrated so as to facilitate easy identification. X. filicaudatum labratum subsp. n. differs from X. f filicaudatum in the presence of a perioral elevation, a unique character in the genus. A male of X. krugi and several males of X. macrostylum are described. They were considered as rare in both species. Information on the ditribution of the different species is also presented.