Gammarus baysali sp nov., a new freshwater amphipod species from Turkey (Amphipoda: Gammaridae)

WOS: 000321228800005A new species of freshwater amphipod, Gammarus baysali sp. nov., collected from Cumayani Cave (Zonguldak Province, Turkey) is described and illustrated. The new species belongs to the Gammarus pulex-group. The most discriminant characters of this species are the minute eyes, densely setose fifth peduncle and flagellar segments of antenna 2, elongated pereopods, and setose anterior margins of pereopod 5 to 7. Additionally, the palp of right maxilla 1 has 4 setae along its outer margin. A detailed morphological description and illustrations of the new species are provided, and differences from related species are discussed.Scientific Research Projects Unit of Abant Izzet Baysal UniversityAbant Izzet Baysal University [2010.03.02.354]We would like to thank Hamdi Mengi, Mehmet Yavuzatmaca, Necmettin Sari, and Elif Basak for their help during field work. This study was supported by the Scientific Research Projects Unit (No: 2010.03.02.354) of Abant Izzet Baysal University