A new species of
Pseudascarophis (Nematoda: Cystidicolidae) found in the stomach of
Kyphosus sectatrix
(Linnaeus) (Kyphosidae), off Rio de Janeiro, Brazil, is described. The new species can be differentiated from the other congeners by the presence of lateral alae, distinct but inconspicuous cephalic papillae at the anterior end, three pairs of precloacal and one pair of adcloacal papillae in males, egg morphology and morphometry of glandular oesophagus and spicules.
Pseudascarophis tropica
is transferred to Ascarophis as
Ascarophis tropica
(Solov’eva) comb. n. due to its ambiguous diagnosis.
