First finding of larvae of Chaoborus crystallinus (Diptera, Chaoboridae) in Serbia

lakes, and wells. They can be found near the surface of aquatic ecosystems, but also at considerable depths on the muddy bottoms of lakes and wells (M e l l a n b y, 1968). Certain species can live buried several centimeters in mud. Their dissemination is of a local nature. For most of their life cycle, the larvae are immobile, i.e., they rest in the water and obtain oxygen from it (M a c a n, 1960). The long cylindrical body (Fig. 1) is transparent or semi-transparent and of a white or yellowish color; the only easily distinguishible features are the black eyes on the