| argentina | buenos aires province | austrodiplostomum ostrowskiae | species | 0 | 1 |
| brazil | parana | austrodiplostomum ostrowskiae | species | 1 | 0 |
| mexico | chiapas | austrodiplostomum ostrowskiae | species | 5 | 0 |
| peru | loreto region | austrodiplostomum ostrowskiae | species | 1 | 0 |
| united states | alabama | austrodiplostomum ostrowskiae | species | 2 | 0 |
| united states | louisiana | austrodiplostomum ostrowskiae | species | 1 | 0 |
| united states | mississippi | austrodiplostomum ostrowskiae | species | 27 | 2 |