Gorgocephalus euryaleae, Huston & Cutmore & Miller & Sasal & Smit & Cribb, 2021

Huston, Daniel C., Cutmore, Scott C., Miller, Terrence L., Sasal, Pierre, Smit, Nico J. & Cribb, Thomas H., 2021, Gorgocephalidae (Digenea: Lepocreadioidea) in the Indo-West Pacific: new species, life-cycle data and perspectives on species delineation over geographic range, Zoological Journal of the Linnean Society 193 (4), pp. 1416-1455 : 1442

GORGOCEPHALUS EURYALEAE SP. NOV.

( FIGS 11 , 12A–C; TABLES 4, 6)

Z o o b a n k r e g i s t r a t i o n: u r n: l s i d: z o o b a n k. org:act: 7C5053D1-DE14-400E-A8FC-36F6E1A305B6.

Type host and locality: Kyphosus gladius Knudsen & Clements ( Perciformes : Kyphosidae ), gladius sea chub, from off Point Peron, Rockingham, Western Australia (32°15’59’’S, 115°41’03’’E) (PP).

Other hosts (definitive): Kyphosus sydneyanus (Günther, 1886) ( Perciformes : Kyphosidae ), silver drummer; Kyphosus cinerascens (Forsskål, 1775) , highfin chub ( Perciformes : Kyphosidae ).

Other localities: Off Rottnest Island , Western Australia (32°59’04’’S, 115°31’06’’E) (RI); Sodwana Bay, KwaZulu-Natal, South Africa (27°32’24’’S, 32°40’41’’E) .

Type material: Holotype ( WAM V9670 ) ex K. gladius from off PP . Paratypes: eight whole-mount specimens and two hologenophores ex K. gladius from PP (WAM V9671– 9680); one whole-mount and three hologenophores ex K. sydneyanus from RI (WAM V9681–9684).

Additional voucher material (adult): Eight wholemount and two hologenophore specimens, ex K. cinerascens from SB (NMB 732).

Figures

Figure 11. Gorgocephalus euryaleae.A, paratype ex Kyphosus gladius, Point Peron, Rockingham, Western Australia; lateral perspective. B, genital atrium, cirrus-sac and ovarian complex of separate paratype ex Kyphosus gladius, Point Peron; lateral perspective. C, holotype ex Kyphosus gladius, Point Peron; ventral perspective. Scale bars: A, C, 500 µm; B, 250 µm.

Figure 12. Gorgocephalus euryaleae and Gorgocephalus graboides, scanning electron micrographs. A, B, oral suckers of adult Gorgocephalus euryaleae ex Kyphosus gladius, Point Peron, Rockingham, Western Australia. C, tegument of adult Gorgocephalus euryaleae, ex Kyphosus gladius, Point Peron. D, E, oral suckers of adult Gorgocephalus graboides ex Kyphosus cinerascens, Lizard Island, Queensland, Australia. F, tegument of adult Gorgocephalus graboides ex Kyphosus cinerascens, Lizard Island. Scale bars: A, E, 40 µm; B, D, 50 µm; C, F, 20 µm.