| australia | | bunostomum trigonocephalum | species | 1 | 0 |
| china | | bunostomum trigonocephalum | species | 16 | 0 |
| china | heilongjiang | bunostomum trigonocephalum | species | 35 | 1 |
| china | jilin | bunostomum trigonocephalum | species | 28 | 1 |
| china | shaanxi | bunostomum trigonocephalum | species | 30 | 1 |
| china | yunnan | bunostomum trigonocephalum | species | 26 | 1 |
| egypt | qalyubia governorate | bunostomum trigonocephalum | species | 0 | 1 |
| ethiopia | dire dawa region | bunostomum trigonocephalum | species | 0 | 1 |
| ethiopia | harari region | bunostomum trigonocephalum | species | 0 | 1 |
| ethiopia | somali region | bunostomum trigonocephalum | species | 0 | 1 |
| france | | bunostomum trigonocephalum | species | 3 | 0 |
| india | | bunostomum trigonocephalum | species | 1 | 0 |
| india | haryana | bunostomum trigonocephalum | species | 0 | 1 |
| india | jammu and kashmir | bunostomum trigonocephalum | species | 0 | 3 |
| italy | piemonte region | bunostomum trigonocephalum | species | 0 | 1 |
| italy | sicily autonomous region | bunostomum trigonocephalum | species | 0 | 1 |
| new zealand | | bunostomum trigonocephalum | species | 6 | 0 |
| united kingdom | scotland | bunostomum trigonocephalum | species | 1 | 1 |