| Ecological Scale | Range of Richness of Insect Gall Morphotypes | Category of Host Plant Species |
|---|---|---|
| Local scale | 1 to 3 | Host plant species |
| 3 to 6 | Multi-host plant species | |
| 6 or more | Super-host plant species | |
| Regional scale | 1 to 3 | Host plant species |
| 6 to 20 | Multi-host plant species | |
| 21 or more species | Super-host plant species |