Observations on the morphology and histopathology of Hoplolaimus pararobustus attacking coffee in Sao Tomé

摘要

Hoplolaimus pararobustus was found on the roots of coffee (Cotfea arabica L.) in Sao Tome. Supplementary descriptive data, supported by scanning electron microscope observations, are given which extend the known range of variability in this species. Nematode infestations caused extensive damage to the cortical parenchyma, and occasionally to the endodermal-vascular region, of the roots.