Hyalella cajasi sp. n., male. A right pereiopod 3, lateral B right pereiopod 4, lateral C right pereiopod 5, lateral, coxal gill omitted D right pereiopod 6, lateral, coxal gill omitted E left pereiopod 7, medial F left sternal gill on sternite of pereionite VII. Scale bars: 0.5 mm.

 
 
  Part of: Alonso M, Jaume D (2017) A new species of Hyalella from the High Andes of Ecuador (Crustacea, Amphipoda, Hyalellidae). ZooKeys 686: 1-13. https://doi.org/10.3897/zookeys.686.12223