AnimaliaMazocraeideaDactylogyridaeMendoza-FrancoEdgar F.TunMariela del Carmen RosadoAnchevidaAllan de Jesús DuarteRodríguezRodolfo E. del RioMorphological and molecular (28S rRNA) data of monogeneans (Platyhelminthes) infecting the gill lamellae of marine fishes in the Campeche Bank, southwest Gulf of MexicoZookeys1192018201878312516110.3897/zookeys.783.26218 Haliotrema longibaculum Zhukov, 1976 Haliotrema longibaculum Zhukov, 1976: 39, fig. 6; Kritsky and Boeger 2002: 32 (transferred to Euryhaliotrema); Kritsky 2012: 242–244, figs 30–36 (redescribed).Type host.

Lutjanusmahogoni (Cuvier, 1828)

Present study.

L.synagris and L.griseus (new host)

Locality/prevalence, mean abundance and intensity range on <italic><tp:taxon-name><tp:taxon-name-part taxon-name-part-type="genus" reg="Lutjanus">L.</tp:taxon-name-part><tp:taxon-name-part taxon-name-part-type="species" reg="synagris">synagris</tp:taxon-name-part></tp:taxon-name></italic>.

San Francisco: 68 fish (mean TL 28.2 cm; range 20–35.7) infected of 70 examined (97%); abundance, 12; intensity of infection, 8–19 worms. Seyba Playa: 77 fish (TL 28.4; 19.2–30.5) infected of 79 examined (97.5 %); abundance, 14; intensity of infection, 6–27. Champoton: 70 fish (TL 28.2; 24.7–30.5) infected of 75 examined (93.3%); abundance, 12; intensity of infection, 4–18.

Supplementary observations

(measurements based on ten specimens on L.synagris). Body 217 (190–270; 8) long; greatest width 62 (50–72; 4). Haptor 65 (55–80; 8) wide. Pharynx 19 (15– 24; 6) wide. MCO 21 (18–26; 6) long. Ventral anchor 25 (24–26; 9) long; dorsal anchor 37 (32–40; 11) long. Ventral bar 43 (33–49; 8) long; dorsal bar 32 (30–33; 5) long.

Comments.

Euryhaliotremalongibaculum was originally described and depicted (as Haliotremalongibaculum) from L.synagris and L.mahogoni collected off Cuba (Area Havana) (Zhukov 1976, Kritsky 2012). Later, Kritsky and Boeger (2002) transferred the species to Euryhaliotrema based on Zhukov´s original description and drawings. The present specimens fit the diagnosis of E.longibaculum, which was redescribed by Kritsky (2012) based on specimens found in L.synagris from Florida, USA. Euryhaliotremalongibaculum is characterized by having dorsal anchors with an elongate superficial root, poorly developed deep root and elongate point extending anteriorly near to the level of the union of the anchor shaft and base, and an articulation process in the copulatory complex connecting the accessory piece to the base of the MCO. Morphometrical comparison of the present material with the redescription of this species provided by Kritsky (2012) did not reveal any differences. Recently, Montoya-Mendoza et al. (2016) reported E.longibaculum (voucher CNHE 10221), from L.synagris from Santiaguillo Reef, Veracruz (Gulf of Mexico). Examination of that voucher allowed us to confirm the species identity.

Specimens deposited.

Ten reference specimens in the CNHE (10601).

KritskyDCBoegerWA (2002) Neotropical Monogenoidea. 41: New and previously described species of Dactylogyridae (Platyhelminthes) from the gills of marine and freshwater perciform fishes (Teleostei) with proposal of a new genus and a hypothesis on phylogeny.Zoosystema24: 740. http://www.mnhn.fr/publication/.KritskyDC (2012) Dactylogyrids (Monogenoidea: Polyonchoinea) parasitising the gills of snappers (Perciformes: Lutjanidae): revision of Euryhaliotrema with new and previously described species from the Red Sea, Persian Gulf, the eastern and Indo-west Pacific Ocean, and the Gulf of Mexico.Zoologia29: 227276. https://doi.org/10.1590/S1984-46702012000300006ZhukovEV (1976) New monogenean species of the genus Haliotrema Johnston and Tiegs, 1922, from the Gulf of Mexico fishes of the fam. Lutianidae (sic).Proceedings, Institute of Biology and Pedology, Far-East Science Centre, Academy of Sciences of the USSR, New Series35: 3347. [In Russian]Montoya-MendozaJCastañeda ChávezMRLango ReynosoFRojas-CastañedaS (2016) Helminths parasites of lane snapper, Lutjanussynagris from Santiaguillo Reef, Veracruz, México.Journal of Agriculture Science8(11): 8188. https://doi.org/10.5539/jas.v8n11p81