New data on the morphology of Procamallanus (Procamallanus) annulatus and Procamallanus (Spirocamallanus) monotaxis (Nematoda: Camallanidae) from marine fishes off New Caledonia

摘要: Two little-known nematode species of the family Camallanidae, intestinal parasites marine perciform fishes, are reported from off New Caledonia: Procamallanus (Procamallanus) annulatus Yamaguti, 1955 goldenlined spinefoot Siganus lineatus (Valenciennes) (Siganidae) and (Spirocamallanus) monotaxis (Olsen, 1952) longspine emperor Lethrinus genivittatus Valenciennes slender variegatus (both Lethrinidae). Detailed light electron microscopical studies (the latter used for first time in these species) revealed some taxonomically important, previously not observed features, such as presence deirids, six crescent-shaped elevations surrounding mouth, three poorly developed protuberances on female tail tip circumcloacal papillae phasmids male P. annulatus, a circumoral flange, only 12 (instead 14 reported) cephalic papillae, shape deirids similar numbers (14–17 14–15) spiral ridges buccal capsules monotaxis. The fourth-stage larva is described time. Firststage larvae both were found to possess several digital processes at tip. present findings represent new host geographical records parasite species.