Figure 1. Sampling sites across the transition between H. e. favorinus and H. e. emma.

Geographic representation of the five locations where H. erato was sampled across the Eastern Peruvian hybrid zone. Dotted line is approximate location of the Tarapoto-Yurimaguas road that transects the hybrid zone and was used for sampling. The D locus affects the presence of the proximal red patch (“dennis”), red hindwing rays and the forewing band color. The Cr locus is responsible for the presence of the hindwing yellow bar and interacts with the Sd locus to affect the shape of the forewing band and hindwing bar.