Published February 5, 2026
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TABLE 2 in Morphological and genetic differentiations revealed a new freshwater species of Gammarus from the French Pyrenees
Authors/Creators
- 1. University of Rennes, CNRS, ECOBIO - UMR 6553, F- 35000, Rennes, France
- 2. CNRS, Station d'Écologie Théorique et Expérimentale du CNRS, UAR- 2029, 2 route du CNRS, F- 09200 Moulis, France
Description
TABLE 2. Geographical distribution and morphological characteristics of freshwater Gammarus species possessing long setae on the anterior margins of pereopods 5–7, and an uropod 3 endopodite that is shorter than or equal to 50% of the exopodite.
| G. ariegiensis sp. nov. | G. orinos | G. stupendus | G. rouxi | G. birsteini | |
|---|---|---|---|---|---|
| Geographical distribution | French Pyrenees Mountains | French Central Massif | South-East France, St Baume Massif | Morocco, Middle Atlas | East Turkey, Caucasus Mountains |
| Setae on articles 4 and 5 of antenna 2 | 3–4 groups of setae shorter or as long as article width | 5–6 groups of setae longer than article width | 5–6 groups of setae longer than article width | 3–4 groups of setae shorter or as long as article width | 8–10 groups of setae longer than article width |
| Calceoli | absent | present | absent | present | absent |
| Setae on margin of uropod 3 | simple/plumose | simple | simple | simple/plumose | simple |
| Number of apical spines on telson | 3 | 2–3 | 1 | 2 | 1 |
| Basal article of pereopod 7 | Short setae without distal constriction | Short setae without distal constriction | Short setae without distal constriction | Long setae with distal constriction | Short setae without distal constriction |
Notes
Published as part of Piscart, Christophe & Blanchet, Simon, 2026, Morphological and genetic differentiations revealed a new freshwater species of Gammarus from the French Pyrenees, pp. 290 in Zootaxa 5757 (3) on page 290, DOI: 10.11646/zootaxa.5757.3.5, http://zenodo.org/record/19173745
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