Identification key to the Arctiidae occurring in the Dakotas
29. (28) Ptagia unmarked whitish, forewing costal margin narrowly black, hindwing without pink or red and with little marginal black. Apantesis carlotta Ferguson.
29a. Ptagia unmarked, forewing costal margin white; hindwing without pink or red, with heavy black marginal spot-band. Apantesis nais (Drury).
29b. Ptagia with black central spot, fw costal margin variable, hindwing with rose pink near anal margin and heavy black marginal spot-band. Apantesis phalerata (Harris).*
