''Gammarus obruki'' is a species of freshwater

amphipod Amphipoda is an order of malacostracan crustaceans with no carapace and generally with laterally compressed bodies. Amphipods range in size from and are mostly detritivores or scavengers. There are more than 9,900 amphipod species so far descr ...

, collected from İnderesi Cave,

Bartın Province Bartın Province ( tr, ), a small province in northern Turkey on the Black Sea, surrounds the city of Bartın. It lies to the east of Zonguldak Province. The town of Bartın contains a number of very old wooden houses in a style no longer ext ...

, Turkey. This species belongs to the '' Gammarus pulex''-group. The most discriminant characters of this species are the presence of prolonged extremities, including a very long antennae, up to 52 segmented

flagella A flagellum (; ) is a hairlike appendage that protrudes from certain plant and animal sperm cells, and from a wide range of microorganisms to provide motility. Many protists with flagella are termed as flagellates. A microorganism may have f ...

, a densely setose fifth

peduncle Peduncle may refer to: *Peduncle (botany), a stalk supporting an inflorescence, which is the part of the shoot of seed plants where flowers are formed *Peduncle (anatomy), a stem, through which a mass of tissue is attached to a body **Peduncle (art ...

, l flagellar segments of antenna, and a fourth peduncle segment that has no long setae.

References

obruki Endemic fauna of Turkey Freshwater crustaceans of Asia Crustaceans described in 2012 {{Amphipod-stub