Abstract
Two new genera and species of Paramphistomidae (Trematoda, Digenea) are described from freshwater fish of Rondônia State, Brazil. Pronamphistoma cichlasomae gen. et sp. nov. from Cichlasoma severum (Heckel) is characterized as having a small, robust body with an anterior collar-like expansion, diverticula within the wall of the oral sucker and vitellaria in lateral fanshaped configurations. Micramphistoma ministoma gen. et sp. nov. from Hypopomus sp lacks oral diverticula, has anteriorly situated parallel tests and a very small postero-ventral acebtabulum. Neither of the new forms closely resembles any known genus.
amphistome; Paramphistomidae; trematode; Amazon; fish parasite
Two new genera of Paramphistomidae (Trematoda, Digenea) from freshwater fish of Rondônia State, Brazil
Veron E. Thatcher1
Instituto Nacional de Pesquisas da Amazônia, Manaus, Brasil
Two new genera and species of Paramphistomidae (Trematoda, Digenea) are described from freshwater fish of Rondônia State, Brazil. Pronamphistoma cichlasomae gen. et sp. nov. from Cichlasoma severum (Heckel) is characterized as having a small, robust body with an anterior collar-like expansion, diverticula within the wall of the oral sucker and vitellaria in lateral fanshaped configurations. Micramphistoma ministoma gen. et sp. nov. from Hypopomus sp lacks oral diverticula, has anteriorly situated parallel tests and a very small postero-ventral acebtabulum. Neither of the new forms closely resembles any known genus.
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Publication Dates
-
Publication in this collection
15 June 2009 -
Date of issue
1992