Symptoms-Pathogenicity Coconuts are especially susceptible for 2 years before and after start of fruit bearing. Older and younger trees are more resistant. Trees may die 4 months after first symptoms appear. Roots are similarly discolored, with soft, spongy cortex. Apparent phytotoxin in the red ring.
Damage causes reduction in water uptake by tree.
Esophageal glands overlapping intestine dorsally, usually obscure. Postvulval uterine sac elongate, extending to about 0.75 of vulva-anus distance, often with a few large spheroid sperms. Male body ventrally arcuate, more strongly curved in tail region. Head, spear and esophagus as in female. Testis single, anteriorly outstretched, with spermatogonia in a row.