During a collecting vacation in August, 1970, I captured several specimens of Euptoieta claudia (Cramer). After spreading the catch, the interesting gradation shown in the accompanying photograph was noted. Figure 1 shows a wing span range from 1 318'' 'to 2".
Rahn, Russell A.
"A Dwarf Form of Euptoieta Claudia (Lepidoptera: Nymphalidae),"
The Great Lakes Entomologist, vol 5
Available at: https://scholar.valpo.edu/tgle/vol5/iss3/10