Common Green Darner
Anax junius
One of Florida's largest familiar dragonflies, the common green darner patrols ponds and wetlands and is notable for long-distance seasonal movements.
Common green darners are large, powerful dragonflies found throughout Florida around ponds, lakes, marshes, slow water, fields, and residential landscapes. Adults hunt on the wing, while aquatic young live below the water surface.
Some populations are resident and others migrate, producing seasonal movements that can involve many individuals. Warm Florida waters also support breeding during cooler parts of the year, especially in southern and tropical regions.
Habitat:
Freshwater Wetlands, Lakes and Ponds, Rivers and Springs, Urban and Residential Areas
Area / Range:
Statewide
Diet:
Adults capture mosquitoes, midges, flies, and other small flying insects in the air. Aquatic nymphs are active predators of insect larvae, small crustaceans, tadpoles, and other small aquatic animals.
Behavior:
Adults patrol open water and adjacent clearings with fast, direct flight, often returning to favored routes. Females place eggs in aquatic vegetation or floating plant material. The wingless nymphs grow underwater through repeated molts before climbing onto vegetation and emerging as flying adults.
Day
Active Times:
Best time to see:
Warm sunny hours around ponds, marshes, canals, and open fields
Florida Native Status:
Native
Conservation Status:
Common and widespread; healthy populations still depend on suitable freshwater habitat and water quality
Safety Level:
Harmless
Safety Information:
Common green darners do not sting and are not aggressive toward people. They may bite only if roughly handled. Observe them without grabbing, and avoid applying broad-spectrum insecticides around breeding water.
Benefits to Property:
Adults prey on many small flying insects, and their presence adds biodiversity to ponds and rain gardens. Dragonfly nymphs are part of healthy freshwater food webs and serve as both predators and prey.
Property Concerns:
Common green darners do not damage buildings, plants, or lawns. Poor water quality, routine shoreline clearing, fish overstocking, and broad pesticide use can reduce breeding habitat. Retain varied native pond-edge vegetation and minimize chemical drift into water.
Fun Fact:
Common green darners are among North America's best-known migratory dragonflies. The name darner refers to the long abdomen, which resembles a large darning needle, although the insect cannot sting with it.
Wildlife Laws:
Common green darners have no special statewide protected status, but collecting may be restricted on public lands, preserves, and other protected properties. Follow site rules and never disturb wildlife or habitat without permission.
Identification:
The thorax is bright green and the abdomen is long, with a dark line running down its upper surface. Mature males usually show blue abdominal markings, while females and immature individuals may be brown, reddish, green, or violet-toned. The clear wings are held out to the sides at rest, and the large eyes meet broadly on top of the head.