Prochetosoma dokdoense n. sp. (Nematoda: Draconematidae), a new free-living marine nematode from a subtidal zone of Dokdo Island in Korea

Abstract

A new species of free-living marine draconematid nematode, Prochaetosoma dokdoense n. sp., is described from the washings of subtidal coarse sediments and shell gravels at Dokdo Island of Korea, northwest Pacific Ocean. Prochaetosoma dokdoense n. sp. is easily discernable from P. campbelli, P. longicapitatum, P. martensi, and P. primitivum in having eight cephalic adhesion tubes. Prochaetosoma dokdoense n. sp. shows some resemblance with P. brighti from the Gulf of Mexico in eight cephalic adhesion tubes, but discernable from it in the number of posterior adhesion tubes in male (six to seven sublateral adhesion tubes and seven subventral adhesion tubes in the new species, while three sublateral adhesion tubes and five subventral adhesion tubes in P. brighti).