Acta Parasitologica

, Volume 63, Issue 2, pp 261–269 | Cite as

A new species of Cacatuocotyle (Monogenea, Dactylogyridae) parasitizing Astyanax spp. (Characiformes, Characidae) from Brazil, including molecular data and a key to species identification

  • Aline Cristina ZagoEmail author
  • Lidiane Franceschini
  • Maria Isabel Müller
  • Reinaldo José da Silva


The present study describes Cacatuocotyle papilionis n. sp. (Monogenea, Dactylogyridae) from the skin of the characid fishes Astyanax lacustris (Lütken, 1875) (=Astyanax altiparanae Garutti & Britski, 2000) and Astyanax fasciatus (Cuvier, 1819) (Characiformes, Characidae) from the Southeast of Brazil, supported by morphological and molecular data. The new species differs from all congeners, mainly due to the morphology of the ventral bar (resembling a butterfly), accessory piece, and the number of rings of the male copulatory organ (MCO), comprising a coiled tube with 4.5–5.5 counterclockwise rings. The first molecular data for this monogenean genus is provided in this study, using the partial sequences of the ribosomal gene (28S), as well as providing an identification key to the species.


Characid fishes monogenean ectoparasite 28S rDNA fragments Neotropical region 


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Copyright information

© Witold Stefański Institute of Parasitology, Polish Academy of Sciences 2018

Authors and Affiliations

  • Aline Cristina Zago
    • 1
    Email author
  • Lidiane Franceschini
    • 1
  • Maria Isabel Müller
    • 1
  • Reinaldo José da Silva
    • 1
  1. 1.São Paulo State University (Unesp)Institute of BiosciencesBotucatuBrazil

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