Keys for 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


THE KRÖTENBACH BENTHOS REPORT

Genus Gammarus

Ominpresent in the Taunus waters, I found only a few of them in this stretch of the Krötenbach