L. Albanna et Sl. Gardner, 3 NEW SPECIES OF NEMATODES ASSOCIATED WITH ENDEMIC GRAPE (VITIS) IN CALIFORNIA, Journal of the Helminthological Society of Washington, 60(2), 1993, pp. 243-249
Three new species of nematodes were encountered during a study of natu
ral diversity of nematode associates of native species of Vitis L. in
California. Achromadora walkeri sp. n. was found in rhizosoil of the n
ative California grape Vitis californica Bentham and is characterized
by the position of the amphid (within the vicinity of both dorsal and
ventral teeth), a relatively long stoma, and the absence of a prerectu
m. The other 2 species were plant parasitic criconematids: Criconemoid
es featherensis sp. n., found in association with roots of V. californ
ica, is characterized by possessing strongly retrose annuli posterior
to the vulva, a long stylet, the shape of the first annulus of the hea
d, and rare anastomosis of annuli of the body. Specimens of Hemicyclio
phora armandae sp. n. were recovered from the rhizosoil of the desert
grape Vitis girdiana Munson and are characterized by having 3 cephalic
annuli, a lateral field marked by interruption of the striae, a long
stylet, and a digitate tail. The study of symbiotic associations of na
tive species of crop plants is important in studies of faunal and flor
al biodiversity.