| canada | | choristoneura occidentalis | species | 3 | 0 |
| canada | alberta | choristoneura occidentalis | species | 56 | 0 |
| canada | british columbia | choristoneura occidentalis | species | 25 | 0 |
| united states | missouri | choristoneura occidentalis | species | 1 | 0 |
| united states | montana | choristoneura occidentalis | species | 2 | 0 |