| anguilla | | anguillicola crassus | species | 0 | 103 |
| anguilla | | anguillicola novaezelandiae | species | 0 | 7 |
| anguilla | | anguillicola papernai | species | 0 | 2 |
| australia | | anguillicola australiensis | species | 49 | 0 |
| australia | | anguillicola crassus | species | 2 | 0 |
| australia | | anguillicola novaezelandiae | species | 30 | 0 |
| austria | lower austria | anguillicola papernai | species | 2 | 0 |
| belgium | flemish region | anguillicola crassus | species | 0 | 2 |
| canada | new brunswick | anguillicola crassus | species | 0 | 1 |
| canada | nova scotia | anguillicola crassus | species | 6 | 3 |
| canada | prince edward island | anguillicola crassus | species | 0 | 1 |
| china | | anguillicola australiensis | species | 2 | 0 |
| china | | anguillicola crassus | species | 49 | 0 |
| czech republic | | anguillicola crassus | species | 1 | 0 |
| finland | | anguillicola crassus | species | 16 | 0 |
| france | | anguillicola crassus | species | 123 | 0 |
| france | corse region | anguillicola crassus | species | 0 | 1 |
| germany | | anguillicola crassus | species | 15 | 0 |
| ireland | | anguillicola crassus | species | 30 | 0 |
| italy | | anguillicola crassus | species | 30 | 0 |
| japan | | anguillicola crassus | species | 55 | 0 |
| japan | aichi prefecture | anguillicola crassus | species | 0 | 1 |
| madagascar | | anguillicola novaezelandiae | species | 2 | 0 |
| madagascar | | anguillicola papernai | species | 48 | 0 |
| new zealand | | anguillicola novaezelandiae | species | 2 | 0 |
| poland | | anguillicola crassus | species | 12 | 0 |
| portugal | | anguillicola crassus | species | 15 | 0 |
| portugal | aveiro district | anguillicola crassus | species | 0 | 1 |
| reunion | | anguillicola crassus | species | 0 | 1 |
| south africa | | anguillicola papernai | species | 44 | 0 |
| spain | | anguillicola crassus | species | 43 | 0 |
| sweden | | anguillicola crassus | species | 30 | 0 |
| taiwan | | anguillicola crassus | species | 87 | 1 |
| tunisia | bizerte governorate | anguillicola crassus | species | 0 | 1 |
| turkey | | anguillicola crassus | species | 19 | 0 |
| turkey | hatay province | anguillicola crassus | species | 0 | 1 |
| united kingdom | | anguillicola crassus | species | 46 | 0 |
| united kingdom | england | anguillicola crassus | species | 0 | 1 |
| united kingdom | scotland | anguillicola crassus | species | 46 | 1 |
| united states | | anguillicola crassus | species | 92 | 0 |
| united states | arkansas | anguillicola crassus | species | 0 | 1 |
| united states | maine | anguillicola crassus | species | 0 | 1 |
| united states | maryland | anguillicola crassus | species | 0 | 1 |
| united states | massachusetts | anguillicola crassus | species | 464 | 1 |
| united states | mississippi | anguillicola crassus | species | 0 | 1 |
| united states | new york | anguillicola crassus | species | 0 | 1 |
| united states | rhode island | anguillicola crassus | species | 0 | 1 |
| united states | south carolina | anguillicola crassus | species | 0 | 2 |