| Species | Name Used in Reference |
|---|---|
| Cryptancistrus similis Fisch-Muller, Mol & Covain, 2018 | Cryptancistrus similis (p. 52;tab.5;figs.18-19) |
| Guyanancistrus brownsbergensis Mol, Fisch-Muller & Covain, 2018 | Guyanancistrus brownsbergensis (p. 40;figs.6F,13) |
| Guyanancistrus megastictus Fisch-Muller, Mol & Covain, 2018 | Guyanancistrus megastictus (p. 46;figs.6C,17;tab.5) |
| Guyanancistrus nassauensis Mol, Fisch-Muller & Covain, 2018 | Guyanancistrus nassauensis (p. 37;figs.6E,12) |
| Guyanancistrus tenuis Fisch-Muller, Mol & Covain, 2018 | Guyanancistrus tenuis (p. 44;figs.15-16;tab.5) |
| Guyanancistrus teretirostris Fisch-Muller, Mol & Covain, 2018 | Guyanancistrus teretirostris (p. 42;fig.14) |