Heterodera achilleae n. sp. (Nematoda: Heteroderidae) from Yarrow in Yugoslavia


  • A. M. Golden
  • O. Klindi


Heterodera achilleae n. sp., a member of the 14. rostochiensis group, is described and illustrated from roots of yarrow, Achillea millefolium L. in Sarajevo, Yugoslavia. This new, round-cyst species differs from closely related species especially as follows: (1) from H. leptonepia, by having stouter larvae (a = 21), with longer styler (25 [mu]), and with outlet of dorsal esophageal gland averaging 5.7 [mu] from base o f styler; (2) from H. millefolii, in having excretory pore at base of neck and small, straight vulval slit of 5 [mu]; (3) from H. rostochiensis, in having a B/A ratio (Granek's ratio) of 1.6 ; (4) from H. tabacum, by longer female stylet, two annules on female head, and males with outlet of dorsal esophageal gland further back (5.7 [mu]). In addition, H. achilleae n. sp. differs from the latter three species in having prominent longitudinal striae on the anterior half, or more, of cysts and females. Key Words: taxonomy, morphology, new Heterodera species, Achillea millefolium.