Geographical distribution of O. aestuarensis for sampling locations known to 2019.

 
 
  Part of: Wildish DJ, Radulovici AE (2020) Amphipods in estuaries: the sibling species low salinity switch hypothesis. Zoosystematics and Evolution 96(2): 797-805. https://doi.org/10.3897/zse.96.55896