Gammarus undetermined

Hou, Zhonge, Li, Junbo & Li, Shuqiang, 2014, Diversification of low dispersal crustaceans through mountain uplift: a case study of Gammarus (Amphipoda: Gammaridae) with descriptions of four novel species, Zoological Journal of the Linnean Society 170 (4), pp. 591-633 : 632

KEY TO THE GAMMARUS SPECIES OF THE LÜLIANG AND TAIHANG MOUNTAINS

1. Pereopod 3 with short setae on posterior margin....................................................... Gammarus shanxiensis

– Pereopod 3 with long setae on posterior margin......................................................................................2

2. Pereopod 3 with long, straight setae on posterior margin ......................................................................... 3

– Pereopod 3 with long, curled setae on posterior margin............................................................................5

3. Eyes oval................................................................................................ Gammarus benignus sp. nov.

– Eyes reniform...................................................................................................................................4

4. Urosomites 1, 2 flat................................................................................... Gammarus pisinnus sp. nov.

– Urosomites 1, 2 weakly elevated.................................................................................... Gammarus clarus

5. Outer margin of outer ramus in uropod 3 with only simple setae ................................... Gammarus nekkensis

– Both margins of outer ramus in uropod 3 with plumose setae...................................................................6

6. Epimeral plate 3 with blunt posterior corner............................................. Gammarus monticellus sp. nov.

– Epimeral plate 3 with acute posterior corner ............................................. Gammarus incoercitus sp. nov.