Black flies lay their eggs on aquatic plants or rocks. The larvae, which are almost bottle-shaped, stick to the ground sticking the body out in the water. On the head they have a special ‘brush-like’ mouth part that collects tiny organisms out of the water. Pupation occurs in a cocoon that is open at one […]
The black fly (Simuliidae) is approx. 2 mm long, powerfully built flies. They are black and often have whitish markings on the body and legs. There are fifty different species of black flies in Denmark. They all need running water. Some species mate in streams, others in brooks and ditches.