Haliotrematoides caesionis ( Yamaguti, 1953 ) Kritsky, Delane C., Tingbao, Yang & Yuan, Sun, 2009

Kritsky, Delane C., Tingbao, Yang & Yuan, Sun, 2009, Dactylogyrids (Monogenoidea, Polyonchoinea) parasitizing the gills of snappers (Perciformes, Lutjanidae): Proposal of Haliotrematoides n. gen. and descriptions of new and previously described species from marine fishes of the Red Sea, the eastern and Indo-west Pacific Ocean, Gulf of Mexico and Caribbean Sea, Zootaxa 1970 (1970), pp. 1-51 : 43-44

Haliotrematoides caesionis ( Yamaguti, 1953) n. comb.

( Figs. 120–125)

Syn. Haliotrema caesionis Yamaguti, 1953 .

Source of current specimens: Redbelly yellowtail fusilier, Caesio cuning (Bloch) (Caesionidae) : off Heron Island, Great Barrier Reef, Australia (23 o 27'S, 151 o 55'E), 15 July 2001.

Type host and locality: Redbelly yellowtail fusilier, Caesio cuning (Bloch) (Caesionidae) : Macassar, Indonesia.

Site of infection: Gills.

Specimens studied: 27 voucher specimens, USNPC 101375, BMNH 2008.11.19.65-69, QM G230698- 704.

Previous record (as Haliotrema caesionis ): Caesio cuning [as C. kuning (Cuvier & Valenciennes) ]: Macassar, Indonesia ( Yamaguti 1953).

Measurements: Body 664 (614–739; n = 16) long; greatest width 94 (79–113; n = 17). Haptor 93 (82–103; n = 16) long, 83 (75–95; n = 16) wide. Pharynx 33 (30–37; n = 17) wide. MCO 50 (45–55; n = 4) long. Ventral anchor 61 (58–64; n = 9) long; dorsal anchor 64 (61–68; n = 8) long. Ventral bar 33 (31–35; n = 6) long; dorsal bar 40 (37–43; n = 7) long. Hook 13 (12–14; n = 25) long. Germarium 65 (52–86; n = 9) long, 27 (22–34; n = 9) wide; testis 89 (75–114; n = 15) long, 41 (30–48; n = 15) wide.

Remarks: Yamaguti (1953), who described this species as Haliotrema caesionis , provided an adequate description for diagnosis of the species. Present specimens and the original description justify transfer of the species to Haliotrematoides as H. caesionis ( Yamaguti, 1953) n. comb. The following information from present specimens supplements the original description: 1) the base of the dorsal anchor is perforated (not shown in the original description); 2) the median notch on the dorsal bar described by Yamaguti (1953) was not present in current specimens; 3) a vesicle containing fine granular material was associated with each shaft of the dorsal and ventral anchors (not mentioned by Yamaguti 1953); 4) the posterior eyespots have an anterolateral lens (apparently not observed by Yamaguti 1953); and 5) the two prostatic reservoirs and the inflated proximal portion of the vas deferens were not observed in present specimens.

The present finding of H. caesionis on Caesio cuning in Australia represents a new locality record for the helminth.