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Delturus anguillicaudatus, photo by J.W. Armbruster
Juvenile Delturus anguillicaudatus, photo by J.W. Armbruster
Delturus parahybae, photo by K.S. Cummings
D. anguilicauda (Steindachner 1876)
D. carinotus (La Monte 1933)
D. parahybae Eigenmann and Eigenmann 1889
Delturus can be separated from all other loricariids except Upsilodusby
the presence of a postdorsal ridge made up of raised, median, unpaired
plates and the presence of an adipose fin membrane.
be separated from Delturus by not having the anterior plates of
the ridge contacting the lateral plates (juvenile Delturus
have this condition), by having a rectangular (vs. V-shaped) spinelet,
and by having 7 dorsal-fin rays (vs. 8+). Juvenile Delturus
have a condition of the postdorsal ridge plates approaching that of Upsilodus,
so care must be taken not to confuse the two