Distribution of species of the genus Bactrurus (Amphipoda, Crangonyctidae), overlain on a map of the maximum extent of Pleistocene glacial episodes derived from Fullerton et al. (2003). Letters A–F (red arrows) are localities discussed in the body of the text.

  Part of: Taylor SJ, Niemiller ML (2016) Biogeography and conservation assessment of Bactrurus groundwater amphipods (Crangonyctidae) in the central and eastern United States. Subterranean Biology 17: 1-29. https://doi.org/10.3897/subtbiol.17.7298