Wide-set, large compound eyes give damselflies acute stereoscopic vision.
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damselfly
I took a front facing photo of this pondhawk dragonfly eating a damselfly and this is the side view.
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Many of these species prey on each other but Dragonflies typically eat mosquitoes, and other small insects like flies, bees, ants and butterflies. They are therefore valued as predators, since they help control populations of harmful insects.
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Like dragonflies, damselflies are not pests. They are considered beneficial because they eat mosquitoes and other pests.
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Damselflies are similar to dragonflies, but the adults can be differentiated by the fact that the wings of most damselflies are held along, and parallel to, the body when at rest.
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