Abstract
Comparative studies with the scanning electron and interference contrast microscopes of white females and cysts provided new information for identification of species of the genus Heterodera (subgenus Heterodera). Most significant was the differences found in the development of the underbridge and bullae of several economically important species. Differences in vulval cone and fenestral structures of the white female provided additional information for the separation of species.

This publication has 0 references indexed in Scilit: