Zanclognatha theralis. There are no structural differences between Zanclognatha theralis, Z. deceptricalis, Z. inconspicualis and Z. gypsalis. The holotype of Z. theralis is a small gray form with an evenly curved thin postmedial line. In the syntypes of Z. deceptricalis the transverse lines are prominent and form thick triangular spots on the costa and the pm line bends abruptly below the costa to project toward the outer wing margin. Z. gypsalis, syn. n. is a form with the central part of the forewing washed with white shading and the pm line may be sharply angled or evenly curved and thick or thin at the costa. It was described from North Carolina but is much more widely distributed. Z. inconspicualis, syn. n. is most like Z. deceptricalis, but the pm line is evenly angled. Intermediate forms occur, although in some areas, two forms may occur together without apparent intermediate forms. The barcodes of the forms include 13 haplotypes among 16 specimens sampled and forms differ by three (of 658) base-pairs or less, with no apparent segregation of the forms by barcode, so we treat them as forms of a single species.