Systematic Parasitology

, Volume 87, Issue 1, pp 73–82 | Cite as

Dactylogyrids (Monogenoidea: Polyonchoinea) parasitising the gills of snappers (Perciformes: Lutjanidae): Species of Euryhaliotrema Kritsky & Boeger, 2002 from the golden snapper Lutjanus johnii (Bloch) off northern Australia, with a redescription of Euryhaliotrema johni (Tripathi, 1959) and descriptions of two new species

  • Delane C. Kritsky
  • Ben K. Diggles


Three species of Euryhaliotrema Kritsky & Boeger, 2002 (Monogenoidea: Dactylogyridae) were collected from the gills of four golden snapper Lutjanus johnii (Bloch) (Lutjanidae) from the marine and brackish waters off Darwin, Northern Territory, Australia. Type-specimens of Ancyrocephalus johni Tripathi, 1959 apparently have not survived and the possibility existed that the species was based on specimens representing more than one species. Euryhaliotrema johni (Tripathi, 1959) (sensu Young, 1968) was redescribed and determined to most likely represent A. johni, originally described from the River Hooghly, Diamond Harbour, India. Two new species were described. Euryhaliotrema longibaculoides n. sp. was most similar to Euryhaliotrema longibaculum (Zhukov, 1976) Kritsky & Boeger, 2002 from Lutjanus spp. from the western Atlantic Ocean. It differed from E. longibaculum by having a male copulatory organ (MCO) with an elongate comparatively delicate shaft and a bulbous base (MCO U- or J-shaped with funnel-shaped base in E. longibaculum). Based on the comparative morphology of the haptoral sclerites, Euryhaliotrema lisae n. sp. was most similar to Euryhaliotrema cryptophallus Kritsky & Yang, 2012 from the gills of the mangrove red snapper Lutjanus argentimaculatus (Forsskål) from the South China Sea. Euryhaliotrema lisae differed from E. cryptophallus by having a copulatory complex with an obvious weakly sclerotised J-shaped MCO (MCO cryptic, delicate, and with a shaft comprising about one counterclockwise ring in E. cryptophallus).


Seminal Receptacle Male Copulatory Organ Accessory Piece Cephalic Region United States National Parasite Collection 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.



The authors gratefully acknowledge the following for assistance during field collections: Kate Hutson, School of Marine and Tropical Biology, James Cook University, Townsville, Queensland; Will Macbeth, Lachlan Barnes, and other field staff from Cardno; and Quentin Allsop, Wayne Baldwin, Chris Errity and other field staff from the Northern Territory Fisheries. Will Macbeth and Lachlan Barnes provided important comments on drafts of the manuscript. This project was undertaken by DigsFish Services, Pty Ltd., Banksia Beach, Queensland 4507, Australia, under contract to Cardno as part of environmental monitoring for the Ichthys Gas Field Development Project.


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Copyright information

© Springer Science+Business Media Dordrecht 2013

Authors and Affiliations

  1. 1.Health Education Program, School of Health ProfessionsIdaho State UniversityPocatelloUSA
  2. 2.DigsFish Services Pty Ltd.Banksia BeachAustralia

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