Descriptions of Meloidogyne camelliae n.sp. and M. querciana n.sp (Nematoda:Meloidogynidae) , with SEM and Host-Range Observations
Golden, A.M.
Journal of Nematology 11(2): 175-189
1979
ISSN/ISBN: 0022-300X PMID: 19305554 Document Number: 139354
M. camelliae sp. nov. on camellia (Camellia japonica) from Japan and M. querciana sp. nov. on pin oak (Quercus palustris) from Virginia, USA, are described and illustrated. M. camelliae is distinguishable from other species of the genus by its striking perineal pattern having heavy ropelike striae forming a squarish to rectangular outline with shoulders or projections, appearing sometimes almost starlike. M. querciana differs from other species by its characteristic perineal pattern round to oval in outline, sometimes with a low arch, and sunken vulva surrounded by a prominent obovate area devoid of striae. M. querciana shows some relationship to M. ovalis, but differs from the latter by longer larvae, absence of annules on head of larvae and rarity of males. Examination of specimens of M. camelliae and M. querciana with the scanning electron microscope confirmed observations made by optical microscopy and revealed diagnostic and other structures in greater detail. In greenhouse host tests, M. camelliae infected camellia heavily, showed moderate infection on oxalis, only a trace infection on tomato and no infection on 5 other plants tested. M. querciana attacked pin oak seedling did not become infected when heavily inoculated with and grown in the presence of 2 populations of M. incognita incognita and 1 of M. incognita acrita. The common names camellia root-knot nematode and oak root-knot nematode are proposed for M. camelliae and M. querciana, respectively.