Prosthenhystera obesa (Diesing,1850) Travassos, 1922 from the gall bladder
of Astyanax bimaculatus, Caranx gibbosus, Galeocharax humeralis, Leporinus
copelandii, Pimelodus fur, Pseudopimelodus roosevelti, Salminus brevidens,
Salminus maxillosus and from the new hosts, Cynopotamus amazonum and
Triurobrycon lundii is redescribed, demonstrating a large morphological
variation, mainly in body and testes size and shape. New hosts harbouring
immature specimens of P. obesa are presented: Brycon sp., Leporellus
vittatus, Pachyurus squamipinnis, Pimelodus clarias, Pseudoplatystoma
corruscans and Salminus hilarii. Scanning electron microscopy
micrographies, original figures and measurements of adult and immature
specimens from different Brazilian hosts and localities are presented.
