| austria | | isopterygiopsis muelleriana | species | 3 | 0 |
| canada | nunavut | isopterygiopsis alpicola | species | 1 | 0 |
| china | | isopterygiopsis muelleriana | species | 5 | 0 |
| japan | | isopterygiopsis muelleriana | species | 6 | 0 |
| japan | fukushima prefecture | isopterygiopsis muelleriana | species | 2 | 0 |
| japan | nagano prefecture | isopterygiopsis pulchella | species | 1 | 0 |
| russia | | isopterygiopsis alpicola | species | 8 | 0 |
| russia | | isopterygiopsis muelleriana | species | 16 | 0 |
| russia | | isopterygiopsis pulchella | species | 12 | 0 |
| united kingdom | scotland | isopterygiopsis muelleriana | species | 16 | 0 |
| united states | california | isopterygiopsis pulchella | species | 3 | 0 |
| united states | north carolina | isopterygiopsis muelleriana | species | 3 | 0 |