A new Niphargus species from Switzerland. Niphargus arolaensis sp. nov. (holotype, female 7.8 mm). The two diagnostic features (seven comb-like spiniform setae on the outer lobe of maxilla I and two spiniform setae on the lower distal part of the first urosomite near the insertion of uropod 1) are highlighted on the figure.

 
 
  Part of: Alther R, Bongni N, Borko Š, Fišer C, Altermatt F (2021) Citizen science approach reveals groundwater fauna in Switzerland and a new species of Niphargus (Amphipoda, Niphargidae). Subterranean Biology 39: 1-31. https://doi.org/10.3897/subtbiol.39.66755