The distribution of the four most abundat stygobite species of copepods in the dataset. a Distribution of Spelaeocamptus spelaeus (Harpacticoida) in Romania based on 16 occurences (15 caves and one tap water) b Distribution of Acanthocyclops milotai (Cyclopoida) in Romania based based on 13 occurences (caves) c Distribution of Diacyclops clandestinus in Romania based on 13 occurences (caves, hyporheic, wells, springs, tap water) d Distribution of Acanthocyclops kieferi in Romania based on 12 occurences (caves, hyporheic, wells, tap water).