Upsilodus
A. Miranda Ribeiro, 1924
Hemipsilichthys nimius, Photo by J.W. Armbruster
Armbruster (1997, 2004) determined that a clade consisting of Delturus and Upsilodus
(Upsilodus may be synonymous with Hemipsilichthys gobio) form a monophyletic group sister to all other loricariids. A manuscript is currently in press by myself, Roberto Reis, and Edson Pereira, so limited information is provided here. In my thesis (Armbruster, 1997), I mistakenly referred to the juvenile Delturus I had available
as Upsilodus.
GENUS SYNONYMS
Upsilodus Miranda Ribeiro 1924
SPECIES
- H. gobio Lütken 1874
- H. nimius Pereira, Reis, Souza, and Lazzarotto 2003
- H. papillatus Pereiram Oliveira and Oyakawa 2000
- H. victori A. Miranda Ribeiro 1924 (Synonym of H. gobio)
COMPARISONS
Hemipsilichthys can be separated from nearly all other loricariids
except Delturusby the presence of a postdorsal ridge made up of
raised, median, unpaired plates and the presence of an adipose fin membrane.
Hemipsilichthys can
be separated from Delturus by not having the posterior membrane of the dorsal fin contacting the anteiormost preadipose plate.
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If you have any comments or questions regarding this site, please contact Jon Armbruster at armbrjw@mail.auburn.edu
