Distribution of hirtus-group species. All known sites for hirtus-group species in Kentucky, Tennessee, Alabama, and Georgia. P. shapardi sites in Oklahoma and Arkansas are indicated in upper right inset map. A dozen species from the southern Cumberland Plateau in Tennessee and Alabama are combined.

 
 
  Part of: Leray VL, Caravas J, Friedrich M, Zigler KS (2019) Mitochondrial sequence data indicate “Vicariance by Erosion” as a mechanism of species diversification in North American Ptomaphagus (Coleoptera, Leiodidae, Cholevinae) cave beetles. Subterranean Biology 29: 35-57. https://doi.org/10.3897/subtbiol.29.31377