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An adult has six long legs, a long narrow abdomen, and two wings that are narrow at the base. Larvae are aquatic.
Adults swarm over water and moist habitats. Larvae live in water or wet moss.
Adults eat flower nectar and pollen. Larvae eat algae or plant material or filter microscopic organisms from the water. Some prey on other insects.
Fish, aquatic animals, birds, shrews, ground beetles
Adults live for only five to ten days. Larvae live as long as seven years.
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