| argentina | la pampa province | oesophagostomum venulosum | species | 0 | 1 |
| australia | | oesophagostomum venulosum | species | 1 | 0 |
| australia | new south wales | oesophagostomum venulosum | species | 0 | 1 |
| australia | queensland | oesophagostomum venulosum | species | 0 | 1 |
| australia | victoria | oesophagostomum venulosum | species | 0 | 1 |
| austria | salzburg | oesophagostomum venulosum | species | 0 | 1 |
| bulgaria | stara zagora province | oesophagostomum venulosum | species | 0 | 1 |
| egypt | qalyubia governorate | oesophagostomum venulosum | species | 0 | 1 |
| france | | oesophagostomum venulosum | species | 3 | 0 |
| france | centre region | oesophagostomum venulosum | species | 1 | 1 |
| france | champagne-ardenne region | oesophagostomum venulosum | species | 3 | 0 |
| france | ile-de-france region | oesophagostomum venulosum | species | 3 | 0 |
| france | rhone-alpes region | oesophagostomum venulosum | species | 1 | 0 |
| germany | bavaria | oesophagostomum venulosum | species | 0 | 1 |
| ireland | | oesophagostomum venulosum | species | 1 | 0 |
| italy | piemonte region | oesophagostomum venulosum | species | 0 | 2 |
| new zealand | | oesophagostomum venulosum | species | 5 | 0 |
| poland | pomorskie province | oesophagostomum venulosum | species | 0 | 1 |
| turkey | afyonkarahisar province | oesophagostomum venulosum | species | 0 | 1 |
| united states | california | oesophagostomum venulosum | species | 0 | 2 |
| united states | oregon | oesophagostomum venulosum | species | 0 | 1 |
| united states | texas | oesophagostomum venulosum | species | 0 | 1 |
| united states | virginia | oesophagostomum venulosum | species | 0 | 1 |
| united states | west virginia | oesophagostomum venulosum | species | 0 | 1 |