A new species of Heterocotyle Scott, 1904 (Monogenea: Monocotylidae) from the gills of Dasyatis guttata (Dasyatidae) in southwestern Atlantic waters off Rio de Janeiro, Brazil

Syst Parasitol. 2012 Jan;81(1):65-70. doi: 10.1007/s11230-011-9328-5. Epub 2011 Dec 4.


Heterocotyle sulamericana n. sp. is described from the gills of Dasyatis guttata (Bloch & Schneider) caught off the coast of Brazil near Rio de Janeiro. This species can be distinguished from all other members of Heterocotyle Scott, 1904 by a combination of the morphology of the male copulatory organ, which is a short, slightly curved, sclerotised tube with no accessory piece, and the haptor, which has a single ridge surmounting all septa. This is the first Heterocotyle species to be described from the southwestern Atlantic.

MeSH terms

  • Animal Structures / ultrastructure
  • Animals
  • Brazil / epidemiology
  • Fish Diseases / epidemiology
  • Fish Diseases / parasitology
  • Gills / parasitology*
  • Male
  • Microscopy, Confocal
  • Platyhelminths / anatomy & histology
  • Platyhelminths / classification*
  • Platyhelminths / isolation & purification
  • Species Specificity
  • Trematode Infections / epidemiology
  • Trematode Infections / parasitology
  • Trematode Infections / veterinary*