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Maximum-likelihood 28S phylogeny of the genus Niphargus. This tree was generated with PhyML under the model SYM+G (290 parameters) selected by jModelTest. For the sake of clarity, only ML bootstrap values higher than 50% are displayed and the long branches leading to Bogidiella albertimagni, Crangonyx subterraneous, Urathoe brevicornis and Niphargus kieferi are drawn with only half of their actual lengths. Clades 1-4 (arrows) are from the present study, Clades A-J are from [6].
