Gulf of Mexico, southeastern United States and the Bahamas
Bush, A. O., and D. J. Forrester. 1976. Helminths of the white ibis in Florida. Proceedings of the Helminthological Society of Washington 43: 17–23.
Scholz, T., M. L. Aguirre-Macedo, and G. Salgado-Maldonado. 2001. Trematodes of the family Heterophyidae (Digenea) in Mexico: a review of species and new host and geographical records. Journal of Natural History 35: 1733–1772.
Added keyword "parasitic"
Overstreet, R. M., J. O. Cook, and R. W. Heard. 2009. Trematoda (Platyhelminthes) of the Gulf of Mexico, Pp. 419–486 in Felder, D.L. and D.K. Camp (eds.), Gulf of Mexico–Origins, Waters, and Biota. Biodiversity. Texas A&M Press, College Station, Texas.
Harte Research Institute for Gulf of Mexico Studies. 2016. GulfBase: Resource Database for Gulf of Mexico Research, Education, and Management. Texas A&M University-Corpus Christi. World Wide Web electronic publication. http://www.gulfbase.org, 06-05-2020.