| australia | south australia | halicephalobus gingivalis | species | 1 | 0 |
| canada | ontario | halicephalobus gingivalis | species | 0 | 1 |
| denmark | | halicephalobus gingivalis | species | 2 | 0 |
| germany | | halicephalobus gingivalis | species | 2 | 0 |
| germany | saxony-anhalt | halicephalobus gingivalis | species | 2 | 0 |
| india | odisha | halicephalobus gingivalis | species | 1 | 0 |
| italy | | halicephalobus gingivalis | species | 1 | 0 |
| italy | piemonte region | halicephalobus gingivalis | species | 0 | 1 |
| japan | ibaraki prefecture | halicephalobus gingivalis | species | 1 | 0 |
| mexico | | halicephalobus gingivalis | species | 1 | 0 |
| romania | cluj county | halicephalobus gingivalis | species | 0 | 1 |
| south africa | | halicephalobus gingivalis | species | 1 | 0 |
| taiwan | | halicephalobus gingivalis | species | 1 | 0 |
| united states | tennessee | halicephalobus gingivalis | species | 1 | 0 |