| bolivia | la paz department | macracanthorhynchus hirudinaceus | species | 0 | 1 |
| brazil | amazonas | macracanthorhynchus hirudinaceus | species | 0 | 1 |
| china | guangdong | macracanthorhynchus hirudinaceus | species | 0 | 1 |
| iran | kermanshah province | macracanthorhynchus hirudinaceus | species | 0 | 1 |
| iran | kurdistan province | macracanthorhynchus hirudinaceus | species | 0 | 1 |
| iran | lorestan province | macracanthorhynchus hirudinaceus | species | 0 | 1 |
| italy | sardinia autonomous region | macracanthorhynchus hirudinaceus | species | 6 | 0 |
| japan | yamaguchi prefecture | macracanthorhynchus hirudinaceus | species | 4 | 0 |
| maldives | | macracanthorhynchus hirudinaceus | species | 0 | 2 |
| spain | valencia | macracanthorhynchus hirudinaceus | species | 0 | 1 |
| turkey | bursa province | macracanthorhynchus hirudinaceus | species | 0 | 1 |
| ukraine | | macracanthorhynchus hirudinaceus | species | 1 | 0 |