Diacyclops sp. 1

Dole-Olivier, Marie-José, Galassi, Diana M. P., Fiers, Frank, Malard, Florian, Martin, Patrick, Martin, Dominique & Marmonier, Pierre, 2015, Biodiversity in mountain groundwater: the Mercantour National Park (France) as a European hotspot, Zoosystema 37 (4), pp. 529-550 : 538

Diacyclops sp. 1

MATERIAL EXAMINED. — Site 28: 1 specimen; site 46: 5 specimens. Material deposited at IRScNB, I.G. 31589.

REMARKS

This species belongs to the Diacyclops languidoides speciesgroup. The languidoides -group comprises Diacyclops species with an 11-segmented antennule and a segmental pattern of P1-P4 exopods and endopods of 2.2/3.2/3.3/3.3 ( Stoch & Pospisil 2000). This group was claimed to be paraphyletic by Stoch & Pospisil (2000) in the absence of synapomorphies differentiating it from the Diacyclops languidus -group, which differs from the languidoides -group in having a 16-segmented antennule. The D. languidoides -group includes both stygobite and epigean species, most of them distinguishable on the basis of microcharacters only, which are sometimes difficult to assess clearly. The material collected from Mercantour is provisionally assigned to this group pending a revision of the genus Diacyclops as a whole, whose diagnosis partially overlaps that of the genus Acanthocyclops Kiefer, 1927 ( Galassi & De Laurentiis 2004a).