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Swift Setwing (Dythemis velox)

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description Swift Setwing (Dythemis velox) Overview

Swift Setwing is a New World dragonfly with the scientific name Dythemis velox, placed in the family Libellulidae. Hermann August Hagen described it in 1861. The species is recognized for rapid flight and for a characteristic resting posture in which the wings are held angled forward, details that help distinguish it in field observation from other perching dragonflies. It is associated with stream habitats across the Americas.

help Swift Setwing (Dythemis velox) FAQ

What is the distinctive resting posture of the Swift Setwing?

Dythemis velox often rests with its wings angled forward toward its face, a posture that makes the species unusually easy to recognise. It is about 2 inches long and has dark-tipped wings and a yellow-and-black abdomen.

Where does the Swift Setwing occur in the United States?

In Illinois it is a rare native species found along the Ohio and Mississippi Rivers. Its wider New World range includes parts of the southern United States, Mexico, and Central America.

What does a male Swift Setwing do near water?

Males usually perch on shrubs near water and make patrol flights to defend a territory. Females are often less visible because they may hunt from trees away from the water.

What is the scientific classification of the Swift Setwing?

The scientific name is Dythemis velox, and it belongs to the skimmer family Libellulidae. Hermann August Hagen described the species in 1861.

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