Altschul, S.F., Madden, T.L., Schäffer, A.A., Zhang, J., Zhang, Z., Miller, W., et al.
1997. Gapped BLAST and PSI-BLAST: a new generation of protein database search programs. Nucleic Acids Research, 25: 3389–3402.
Benson, D.A., Karsch-Mizrachi, I., Lipman, D.J., Ostell, J., and Sayers, E.W.
2011. GenBank. Nucleic Acids Research, 39: D32–D37.
2013. Geographic Distance Matrix Generator (version 1.2.3). American Museum of Natural History, Center for Biodiversity and Conservation [online]. Available from http://biodiversityinformatics.amnh.org/open_source/gdmg [accessed 2 January 2013].
1985. Confidence limits on phylogenies: an approach using the bootstrap. Evolution, 39: 783–791.
1985. Ecological factors which influence migratory behavior in two butterflies of the semi-arid shrublands of South Texas. In
Migration: mechanisms and adaptive significance. Contributions in Marine Science, Supplementary Volume 27, Edited by M.A. Rankin. Marine Science Institute, University of Texas at Austin, Port Aransas, Texas, United States of America. Pp. 724–747.
1969. Migration and dispersal of insects by flight. Methuen, London, United Kingdom.
1951. A field guide to the butterflies of North America, east of the Great Plains. Houghton-Mifflin, Boston, Massachusetts, United States of America.
Nei, M. and Kumar, S.
2000. Molecular evolution and phylogenetics. Oxford University Press, New York, New York, United States of America.
Office of Technology Assessment. 1993. Harmful non-indigenous species in the United States [online], U.S. Congress, Office of Technology Assessment, OTA-F-565. United States Government Printing Office, Washington, District of Columbia, United States of America. Available from http://www.invasive.org/publications/9325.pdf [accessed 22 April 2013].
1992. A field guide to eastern butterflies. Houghton Mifflin, Boston, Massachusetts, United States of America.
Opler, P.A. and Krizek, G.O.
1984. Butterflies east of the Great Plains. John Hopkins University, Baltimore, Maryland, United States of America.
Ratnasingham, S. and Hebert, P.D.N.
2007. BOLD: The Barcode of Life Data System. Molecular Ecology Notes, 7: 355–364. (www.barcodinglife.org).
Saitou, N. and Nei, M.
1987. The neighbor-joining method: a new method for reconstructing phylogenetic trees. Molecular Biology and Evolution, 4: 406–425.
Tamura, K., Peterson, D., Peterson, N., Stecher, G., Nei, M., and Kumar, S.
2011. MEGA5: Molecular evolutionary genetics analysis using maximum likelihood, evolutionary distance, and maximum parsimony methods. Molecular Biology and Evolution, 28: 2731–2739.