Potamotrygon marquesi Silva & Loboda, 2019

Holotype: MZUSP 117790; adult female, 226 mm DW (approximately the same DW as cited in Silva & Loboda, 2019); (Fig. 14); Rio Tarauacá, municipality of Tarauacá, Acre State, Brazil, 8º4’5.88”S, 70º43’4.8”W; depth not listed; F. P. L. Marques et al.; July 2006.

Notes: Ventral skin removed. Right lateral line canals with black ink dots for drawings on original publications. Field no. AC 06-106.

Paratypes: MZUSP 117787: AC 06-95; one adult male, 216 mm DW (approximately the same DW as cited in Silva & Loboda, 2019); Rio Tarauacá, municipality of Tarauacá, Acre State, Brazil, 8º4’5.88”S, 70º43’4.8”W; depth not listed; F.P.L. Marques et al.; July 2006 .

Notes: Cut between gill openings. Cut on right portion abdomen.

MZUSP 117795: AC 06-92; one adult male, 207 mm DW (approximately the same DW as cited in Silva & Loboda, 2019); Rio Tarauacá, municipality of Tarauacá, Acre State, Brazil, 8º4’5.88”S, 70º43’4.8”W; depth: not listed; Collection date: F. P. L. Marques et al.; July 2006 .

Notes: Cut between gill openings; cut on right portion of abdomen.

MZUSP 117798: AC 06-107; one adult female, 244 mm DW (approximately the same DW as cited in Silva & Loboda, 2019); Rio Tarauacá, municipality of Tarauacá, Acre State, Brazil, 8º4’5.88”S, 70º43’4.8”W; depth not listed; F. P. L. Marques et al.; July 2006 .

Notes: Cut on right portion of abdomen.