Taxonomic review of freshwater Gammarus (Crustacea: Amphipoda) from Iran Author Zamanpoore, Mehrdad Author Grabowski, Michal Author Poeckl, Manfred Author Schiemer, Friedrich text Zootaxa 2011 3140 1 14 journal article 45727 10.5281/zenodo.205631 d203873a-602b-4c12-9c8f-17c51609cf74 1175-5326 205631 Gammarus baloutchi Khalaji-Pirbalouty & Sari, 2006 Gammarus baloutchi Khalaji-Pirbalouty & Sari, 2006 : 91 –99, Figs. 1 –4. Locus typicus. Atashgahe Lordegan fall, Chaharmahal Va Bakhteyari Province ( 31º14'N , 51º00'E ). Material examined. Holotype , 8 August 2001 ( ZUTC Amph. 2070); paratypes , ( ZMA Crust. Amph. 204658). Distribution. Endemic species with the only known record from a waterfall in central Zagros ( Fig. 1 ). Ecologic notes. The species lives in high mountains of ca. 2100 m asl. It was found under aquatic vegetation and in a gravel bed ( Khalaji-Pirbalouty & Sari, 2006 ). Taxonomic remarks. Among Iranian Gammarus species, the short endopodite of uropod 3 can only be observed in G. baloutchi , G. l o b i f e r , and G. sepidannus . The first species can be distinguished from G. lobifer by the lack of the sub-angular setae on basis of pereopod 7 ( Khalaji-Pirbalouty and Sari, 2006, Fig. 3 ), shorter antennal gland cone, and longer setation of peduncle segments of antenna 2 ( ibid . Fig. 1 ). From G. sepidannus it differs by having a long eye, less setose flagellum of antenna 2, and shorter antennal gland cone ( ibid . Fig. 1 ).