CLASS |
Malacostraca |
ORDER |
Amphipoda |
FAMILY |
Gammaridae |
GENUS |
Gammarus |

Eyes present

Accessory flagellum on antenna 1 present

Urosome I and II without dorsal tubercles

Basipodite of peraeopod V same width as peraeopod IV (the basis of the last two legs).

Dorsal surface of urosome segments armed with a group of spines.

Uropod III: inner ramus 40-100 % of the length of the outer ramus
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