Hydatophylax infumatus (McLachlan, 1865)
This is a species living in flowing waters rich in detritus. In the ŚPN caught at the Dąbrowa in early August 2008 (2♂). Quite rare in Poland, but has been recorded in the ŚM region in and around the River Lubrzanka (Majecki 1982, Riedel & Majecki 1989, Bis et al. 1992), the Masurian Lakeland (Szczepańska 1958) and the Roztocze Upland (Serafin 2004). H. infumatus is a Red List species (Least Concern – LC) (Szczęsny 2002).