Biodiversity in mountain groundwater: the Mercantour National Park (France) as a European hotspot Author Dole-Olivier, Marie-José Author Galassi, Diana M. P. Author Fiers, Frank Author Malard, Florian Author Martin, Patrick Author Martin, Dominique Author Marmonier, Pierre text Zoosystema 2015 2015-12-31 37 4 529 550 http://dx.doi.org/10.5252/z2015n4a1 journal article 10.5252/z2015n4a1 1638-9387 5156735 urn:lsid:zoobank.org:pub:7458514A-2532-428F-BEAD-5A6313A664D0 Trichodrilus cf. tenuis Hrabě, 1960 MATERIAL EXAMINED. — Site 8: 8 specimens , site 9: 4 specimens , site 23: 2 specimens . Material deposited at IRScNB, I.G. 32392. REMARKS This species is very close to T. tenuis Hrabě, 1960 , from which it can be distinguished by the absence of a so-called “pseudovestibule” at junction with spermathecal ducts, as mentioned by Juget & des Châtelliers (2001) in a complementary description of T. tenuis based on specimens from the eastern part of France (Lyon area). It falls in the Trichodrilus sp. group II sensu Rodriguez & Giani, 1994 , a group of ill-defined species that badly needs revision. This is probably a new species, but its description should ideally be carried out within a revision of the latter group, based on additional material and genetic characterization via DNA barcoding (see Martin et al. 2015 , this issue)