Gammarus undetermined

publication ID	https://doi.org/ 10.1111/zoj.12119
persistent identifier	https://treatment.plazi.org/id/0E4E223A-5935-FFD2-872F-25FC4DD2FDAF
treatment provided by	Marcus
scientific name	Gammarus undetermined
status

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.