Species identification and collection localities of samples of N. pubens, N. fulva, and the RCA/N. cf. pubens used in this study.

All samples (except the types) were provisionally classified as the RCA if collected in the known range of the RCA or as N. cf. pubens if collected in Florida or the Caribbean (indicated in parentheses). Unequivocal species identifications were then based on males and/or molecular data. Specimens for which we were only able to generate morphometric data and no males were present remained indeterminate. Morphometric data in square brackets were excluded from DAPC due to missing data points.