| Table 1. Assignment of rarity coefficients based on element occurrences and sampling efforts since 1982. | ||||
| Rarity coefficients | Chicago Wilderness element occurrences | |||
| butterflies & Papaipema moths | Homoptera & Schinia moths | other macro moths | micro moths & other taxa | |
| 72 sites surveyed | 62 sites surveyed | 49 sites surveyed | 37 sites surveyed | |
| 5 | 0-7 | 0-6 | 0-5 | 0-4 |
| 4 | 8-15 | 7-13 | 6-11 | 5-9 |
| 3 | 16-23 | 14-20 | 12-17 | 10-14 |
| 2 | 24-31 | 21-27 | 18-23 | 15-19 |
| 1 | ≥32 | ≥28 | ≥24 | ≥20 |
| Four rarity criteria are applied to reduce taxonomic bias due to imbalanced sampling effort. | ||||