Larval morphology of benthic and interstitial water mites (Acari: Hydrachnidia) from a Luxembourgian stream Author Martin, Peter text Zootaxa 2016 4139 4 451 480 journal article 10.11646/zootaxa.4139.4.1 f598f138-e21b-4064-869e-4a9fe5433c43 1175-5326 265489 5CC5B706-E9B5-4F63-A264-1131F56F5241 Protzia eximia (Protz, 1896) Remarks. Protzia eximia is the only species of the Hydryphantidae in the stream. As with all hydryphantoid larvae, the larva of P. eximia is characterized by the presence of six leg segments. This family character separates this larva from all other species presented here. Former descriptions of larval P. e xi m i a were published by Jones (1967) , Böttger (1972c) , Ullrich (1976) , Biesiadka & Cichocka (1984) and Martin (2000 , 2006).