| ecuador | francisco de orellana province | proechimys cuvieri | species | 2 | 0 |
| french guiana | | proechimys cuvieri | species | 13 | 0 |
| guyana | barima-waini region | proechimys cuvieri | species | 22 | 0 |
| guyana | cuyuni-mazaruni region | proechimys cuvieri | species | 1 | 0 |
| guyana | demerara-mahaica region | proechimys cuvieri | species | 11 | 0 |
| guyana | essequibo islands-west demerara region | proechimys cuvieri | species | 5 | 0 |
| guyana | potaro-siparuni region | proechimys cuvieri | species | 105 | 0 |
| guyana | upper demerara-berbice region | proechimys cuvieri | species | 7 | 0 |
| guyana | upper takutu-upper essequibo region | proechimys cuvieri | species | 55 | 0 |
| peru | amazonas region | proechimys cuvieri | species | 2 | 0 |
| peru | loreto region | proechimys cuvieri | species | 15 | 0 |
| peru | madre de dios region | proechimys cuvieri | species | 5 | 0 |
| suriname | brokopondo district | proechimys cuvieri | species | 1 | 0 |
| suriname | nickerie district | proechimys cuvieri | species | 5 | 0 |
| venezuela | bolivar | proechimys cuvieri | species | 1 | 0 |