Ranger Robb:
Pipevine Swallowtail, Two Rivers National Wildlife Refuge, IL
Ranger Robb:
Spicebush Swallowtail, female
Ranger Robb:
Eastern Tiger Swallowtail, Garden of The Gods Wilderness, IL_1
Ranger Robb:
Tiger Swallowtail, male. On Missouri Ironweed, Vernonia missurica
Ranger Robb:
Eastern Tiger Swallowtail, Garden of The Gods Wilderness, IL
Ranger Robb:
Spicebush Swallowtail, Harmonie State Park, IN_1
Ranger Robb:
Spicebush Swallowtail
Ranger Robb:
Spicebush Swallowtails
Ranger Robb:
Spicebush Swallowtails
Ranger Robb:
Spicebush Swallowtail, Harmonie State Park, IN
Ranger Robb:
Spicebush, Garden of The Gods Wilderness, IL_1
Ranger Robb:
Spicebush, Garden of The Gods Wilderness, IL
Ranger Robb:
Spicebush Swallowtail, Garden of The Gods Wilderness, IL
Ranger Robb:
Spicebusn, Garden of The Gods Wilderness, IL
Ranger Robb:
Spicebush Swallowtail, female
Ranger Robb:
Spicebush Swallowtail, Bell Mountain Wilderness, Mark Twain NF, MO_1
Ranger Robb:
Spicebush Swallowtail, Bell Mountain Wilderness, Mark Twain NF, MO
Ranger Robb:
Spicebush Swallowtail, Pere Marquette State Park, IL
Ranger Robb:
Spicebush Swallowtails and Red Spotted Purple, Bell Mountain Wilderness, Mark Twain NF, MO
Ranger Robb:
Zebra Swallowtail, Grafton, IL
Ranger Robb:
Colias eurytheme
Ranger Robb:
Orange Sulphur
Ranger Robb:
Orange Sulphur, female
Ranger Robb:
Sulphur, female, Colias sp.
