**Pourriotia carcharodonta**, a rotifier parasitic on **Vaucheria** (Xanthophyceae) causing taxonomic problems
Faculty of Sciences. Biology
Bulletin de la Société zoologique de France. - Paris
, p. 195-202
University of Antwerp
Pourriotia carcharodonta De Smet, 2003 was found to parasitize Vaucheria geminata (Vaucher) de Candolle, 1805, the cells of which form galls around the rotifer. The mature gall has a characteristic inverted-conical shape, bearing 36 lateral projections at its apical side. The development of the gall is presented. Comparison of the trophi of P. carcharodonta and Proales werneckii (Ehrbg., 1834), using scanning electron microscopy, proves that the latter should be reallocated to the genus Pourriotia. In view of the different gall types reported in Vaucheria spp., it is to be expected that still more species belonging to the genus Pourriotia await description.