Abstract:
:A new species of Steganoderma (Steganoderma) (Digenea: Zoogonidae) was found in the digestive tract of the southernmost, endemic and scale-less characid, Gymnocharacinus bergi, inhabiting thermal headwaters of the Valcheta Creek in northern Patagonia, Argentina. Steganoderma valchetensis n. sp. is included in the subgenus Steganoderma because of having a sessile ventral sucker and caeca reaching to the testes. This new species can be distinguished from other species of this genus on the basis of body-length, sucker-ratio, the length of the cirrus-sac, the morphology of the seminal vesicle and gonads, and the location of the vitelline follicles and genital pore. The taxonomic status of the species of Steganoderma, parasitising the freshwater fishes of Patagonia, in southern Argentina, and Chile, is also discussed.
journal_name
Syst Parasitoljournal_title
Systematic parasitologyauthors
Etchegoin JA,Cremonte F,Escalante AHdoi
10.1023/a:1014098732668subject
Has Abstractpub_date
2002-02-01 00:00:00pages
149-53issue
2eissn
0165-5752issn
1573-5192journal_volume
51pub_type
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