Haliotrema longibaculum Zhukov, 1976

Mendoza-Franco, Edgar F., Tun, Mariela del Carmen Rosado, Anchevida, Allan de Jesus Duarte & Rodriguez, Rodolfo E. del Rio, 2018, Morphological and molecular (28 S rRNA) data of monogeneans (Platyhelminthes) infecting the gill lamellae of marine fishes in the Campeche Bank, southwest Gulf of Mexico, ZooKeys 783, pp. 125-161 : 125

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.

Lutjanus mahogoni (Cuvier, 1828)

Present study.

L. synagris and L. griseus (new host)

Locality/prevalence, mean abundance and intensity range on L. synagris .

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.

Euryhaliotrema longibaculum was originally described and depicted (as Haliotrema longibaculum ) 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. Euryhaliotrema longibaculum 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).