River Ybbs (Austria) Page:  1  2  3  4  5  6  7  8  9  10  11  12  13  14  15  16  17  18  19  20  21  22  23  24      Lang.      
 Hydropsyche larvae of the Thricoptera order (sedge). It grows upto 2 cm. in lenght. Althoug a typical bottom dweller, it can drift with the stream and become a beloved prey of the fish.