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Aquatic black fly larvae (Simulium sp.) emerge from eggs and attach themselves to aquatic vegetation and rocks. Most black fly larvae nymphs are filter feeders. Larvae pass through six stages before reaching the pupal stage. Adults emerge from the pupal case through a slit and float to the surface on a bubble of air. The adults are considered a human pest in some areas of the U.S. and Canada. The adults are similar to eye gnats and fly around human faces. Adult black fly females lay their eggs in slow moving waters. Female black flies feed on blood and males feed mainly on nectar.
Image and text copyright © Dennis Kunkel. All rights reserved. |
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