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vol.22 issue4Bacciger pellonaen. sp. (Trematoda, Fellodistornidae) from a freshwater fish, Pellona castelnaeanaValenciennes of Rondônia State, BrazilMONITORAMENTO DE LEPIDÓPTEROS, ASSOCIADOS A PLANTIOS DE EUCALIPTO DA REGIÃO DE AÇAILÂNDIA (MARANHÃO), NO PERÍODO DE AGOSTO/90 A JULHO/91. author indexsubject indexarticles search
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Acta Amazonica

Print version ISSN 0044-5967On-line version ISSN 1809-4392

Abstract

THATCHER, Vernon E.. TWO UNUSUAL NEW GENERA OF PARAMPHISTOMIDAE (TREMATODA, DIGENEA) FROM FRESHWATER FISH OF THE BRAZILIAN AMAZON. Acta Amaz. [online]. 1992, vol.22, n.4, pp.609-613. ISSN 0044-5967.  http://dx.doi.org/10.1590/1809-43921992224613.

Two new genera and species of Paramphistomidae (Tremadota, Digenea) are described from freshwater fish of the Brazilian Amazon. Anavilhanatrema robustagen. et sp. nov. is characterized as having a cylindrical body with an anterior expansion, small suckers, a small cirrus sac, large lobate testes, a lobate ovary, long ceca and extensive vitellaria. Pacudistoma turgidagen. et sp. nov., on the other hand, is distinguished by having a stout, cylindrical body, a large oral sucker with internal diverticula, a large genital sucker, smaller lobate testes, a spherical ovary, long ceca and relatively extensive vitellaria. Both species appear to be host specific with A. robustafound in Pristobrycon striolatus(STEINDACHNER) while P. turgidaoccurus in Hyleus pacu(SCHOMBURCK).

Keywords : amphistome; trematode; Amazon; fish parasite..

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