| 1 | Big Bend National Park | 🇺🇸 United States | | |
| Gray Hairstreak | |
| 2 | Channel Islands National Park | 🇺🇸 United States | | |
| Gray Hairstreak | |
| 3 | Yosemite National Park | 🇺🇸 United States | | |
| Strymon acadica | |
| Gray Hairstreak | |
| Strymon saepium | |
| 4 | Congaree National Park | 🇺🇸 United States | | |
| Gray Hairstreak | |
| 5 | Saguaro National Park | 🇺🇸 United States | | |
| Gray Hairstreak | |
| 6 | Padre Island National Seashore | 🇺🇸 United States | | |
| Gray Hairstreak | |
| 7 | Cabo Pulmo National Park | 🇲🇽 Mexico | | |
| Gray Hairstreak | |
| 8 | Grand Canyon National Park | 🇺🇸 United States | | |
| Gray Hairstreak | |
| 9 | Joshua Tree National Park | 🇺🇸 United States | | |
| Gray Hairstreak | |
| 10 | Sequoia and Kings Canyon National Parks | 🇺🇸 United States | | |
| Gray Hairstreak | |
| Strymon saepium | |
| 11 | Vanoise National Park | 🇫🇷 France | | |
| Sloe Hairstreak | |
| 12 | Guadalupe Mountains National Park | 🇺🇸 United States | | |
| Gray Hairstreak | |
| 13 | El Vizcaíno Biosphere Reserve | 🇲🇽 Mexico | | |
| Gray Hairstreak | |
| 14 | Bahía de Loreto National Park | 🇲🇽 Mexico | | |
| Gray Hairstreak | |
| 15 | Ecrins National Park | 🇫🇷 France | | |
| Sloe Hairstreak | |
| 16 | Aigüestortes National Park | 🇪🇸 Spain | | |
| Sloe Hairstreak | |
| 17 | Cumbres de Monterrey National Park | 🇲🇽 Mexico | | |
| Gray Hairstreak | |
| Lantana Scrub-Hairstreak | |
| 18 | Shenandoah National Park | 🇺🇸 United States | | |
| Gray Hairstreak | |
| 19 | Big Cypress National Preserve | 🇺🇸 United States | | |
| Gray Hairstreak | |
| 20 | Olympic National Park | 🇺🇸 United States | | |
| Gray Hairstreak | |
| 🦋 Strymon sylvinus | |
| 21 | Great Smoky Mountains National Park | 🇺🇸 United States | | |
| Gray Hairstreak | |
| 22 | Point Pelee National Park | 🇨🇦 Canada | | |
| Gray Hairstreak | |
| 23 | Zion National Park | 🇺🇸 United States | | |
| Gray Hairstreak | |
| 24 | Iguazú National Park | 🇦🇷 Argentina | | |
| Gray-Spotted Scrub-Hairstreak | |
| 25 | Merritt Island National Wildlife Refuge | 🇺🇸 United States | | |
| Gray Hairstreak | |
| 26 | Glacier National Park | 🇺🇸 United States | | |
| 🦋 Strymon sylvinus | |
| 27 | Acadia National Park | 🇺🇸 United States | | |
| Gray Hairstreak | |
| 28 | Great Bear Rainforest | 🇨🇦 Canada | | |
| Gray Hairstreak | |
| 29 | Cévennes National Park | 🇫🇷 France | | |
| Sloe Hairstreak | |
| 30 | Iguaçu National Park | 🇧🇷 Brazil | | |
| Gray-Spotted Scrub-Hairstreak | |
| 31 | Grand Teton National Park | 🇺🇸 United States | | |
| Strymon saepium | |
| 32 | Rocky Mountain National Park | 🇺🇸 United States | | |
| Gray Hairstreak | |
| 33 | Sierra de Guadarrama National Park | 🇪🇸 Spain | | |
| Sloe Hairstreak | |
| 34 | Pyrénées National Park | 🇫🇷 France | | |
| Sloe Hairstreak | |
| 35 | Yellowstone National Park | 🇺🇸 United States | | |
| 🦋 Strymon sylvinus | |