Ozbek, MuratRasouli, Hamidreza2019-10-272019-10-2720141300-01791303-61141300-01791303-6114https://doi.org/10.3906/zoo-1306-1https://hdl.handle.net/11454/48685A new subspecies of freshwater amphipod, Gammarus komareki aznavensis subsp. nov., collected from Aznav County (Khalkhal-Ardabil), northwestern Iran, is described and illustrated. The new subspecies belongs to the Gammarus pulex-group and has characteristic features similar to Gammarus komareki. Shorter flagellum of antenna 1, kidney-shaped and bigger eyes, more setose outer margin of the exopodite of uropod 3, and shorter endopodite of uropod 3 are the most obvious features that differ from G. komareki. A detailed morphological description and illustrations of the new subspecies are given and differences from related species are discussed.en10.3906/zoo-1306-1info:eu-repo/semantics/openAccessGammarusnew subspeciesAmphipodafreshwaterIranArticle383326333WOS:000332938000008Q4