Cucullanus gymnothoracis

{{Short description|Species of roundworm}}

{{Speciesbox

| image = Parasite180099-fig4 Cucullanus gymnothoracis (Nematoda, Cucullanidae).png

| image_caption =

| genus = Cucullanus

| species = gymnothoracis

| authority = Moravec & Justine, 2018

}}

File:Parasite180099-fig5 Cucullanus gymnothoracis (Nematoda, Cucullanidae).png]]

Cucullanus gymnothoracis is a species of parasitic nematodes.{{cite journal|last1=Moravec|first1=František|last2=Justine|first2=Jean-Lou|title=Three new species of Cucullanus (Nematoda: Cucullanidae) from marine fishes off New Caledonia, with a key to species of Cucullanus from Anguilliformes|journal=Parasite|volume=25|year=2018|pages=51|issn=1776-1042|doi=10.1051/parasite/2018050|pmid=30234482|pmc=6146675|url=}} {{open access}} It is an endoparasite of the lipspot moray Gymnothorax chilospilus. The species has been described in 2018 by František Moravec & Jean-Lou Justine from material collected off New Caledonia in the South Pacific Ocean.

Cucullanus gymnothoracis was considered somewhat similar to Cucullanus austropacificus, but differs from this species in the absence of cervical alae and the posterior cloacal outgrowth, in the shape and size of the anterior cloacal outgrowth and shorter spicules 1.12 mm long.