Insects diurnal

Familiar Bluet

Enallagma civile

Meet the Familiar Bluet, the sky-blue 'living jewel' of the North American wetlands. This energetic damselfly is a master of the air and a welcome visitor to any backyard pond or garden.

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Quick Identification

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Size

Length of 1.2 to 1.5 inches (30-38 mm); wingspan of approximately 1.5 to 1.8 inches (38-46 mm).

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Colors

Males are vibrant sky blue with black rings; females are polymorphic, appearing either 'andromorph' (blue like males) or 'heteromorph' (tan, olive, or grey-green).

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Key Features

Bright sky-blue abdomen with small black rings
Segment 8 and 9 of the abdomen are entirely blue in males
Double-striped thorax with a wide black humeral stripe
At rest, wings are held together vertically over the back

When You’ll See Them

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Activity pattern diurnal

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Peak hours 10 AM - 4 PM

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Season May - September

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Diet Carnivorous; they hunt small soft-bodied insects like gnats, mosquitoes, and midges while in flight or by gleaning them from leaf surfaces.

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Habitat Highly adaptable; found near ponds, lakes, marshes, slow-moving streams, and suburban garden ponds.

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Behavior

The Familiar Bluet is one of the most widespread and recognizable damselflies in North America, known for its energetic flight and remarkable adaptability. Unlike many damselflies that require pristine, specialized environments, these 'bluets' are generalists. They are frequently observed patrolling the margins of ponds, lakes, and even backyard swimming pools or birdbaths. They are highly active during the day, using their large compound eyes to spot tiny prey and potential rivals from their perches.

During the peak of the day, males are particularly visible as they defend small floating territories near the water's edge. Their flight is characterized by a bouncy, low-to-the-surface movement. When it comes to reproduction, they perform a unique 'tandem' flight where the male clasps the female behind the head. They often lay eggs (oviposition) together, with the male remaining attached to the female as she dips her abdomen into the water to place eggs on aquatic plants, protecting her from other males during the process.

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Camera Tips

Capturing a Familiar Bluet on a backyard or trail camera requires a specialized setup due to their small size and specific habits. To get high-quality footage, you must identify their 'sentinel perches.' These are typically sun-drenched twigs, reeds, or blades of grass that extend over or near a water source. Familiar Bluets are creatures of habit and will often return to the exact same perch after a short hunting flight. Position your camera on a tripod or mount just 6 to 12 inches away from the tip of a likely perch. If your camera has a macro mode or a high-resolution sensor that allows for digital zooming without losing detail, this is the time to use it.

Lighting is the most critical factor for insect photography. These damselflies are most active in full sun, which also provides the best illumination for their iridescent blue bodies. Try to position your camera so the sun is at your back or slightly to the side to avoid silhouetting the insect. Early afternoon is prime time, but the 'golden hour' shortly before sunset can create spectacular effects by backlighting their transparent wings, making the delicate vein patterns visible. If you are using a trigger-based camera, ensure the sensitivity is set to its highest level, as the movement of a small damselfly may not trigger standard PIR sensors; a time-lapse mode set to 5-second intervals is often a more reliable way to 'catch' them.

Since these damselflies are sensitive to wind, choose a calm day for your session. On windy days, they tend to hide deep within thick vegetation where they are difficult to film. You can 'bait' an area for photography not with food, but with habitat. Placing a few clean bamboo stakes or decorative metal garden stakes in a sunny, sheltered spot near a pond will provide them with the perfect stage. Ensure the background is several feet away from the perch to create a beautiful 'bokeh' effect, which makes the vibrant blue of the Familiar Bluet stand out against a soft, blurred green backdrop.

Similar Species

Species that look similar or are commonly confused with Familiar Bluet.

Boreal Bluet

The Boreal Bluet has larger, mushroom-shaped black spots on its abdominal segments compared to the thin rings of the Familiar Bluet.

Tule Bluet

Tule Bluets have significantly more black on their abdomen, often making them look darker than the bright sky-blue Familiar Bluet.

Blue-fronted Dancer

Dancers hold their wings slightly higher and further back when perched, whereas the Familiar Bluet holds them tight and parallel to its body.

Frequently Asked Questions

Familiar Bluets are strictly diurnal and are most active during the warmest, brightest parts of the day, typically between 10 AM and 4 PM. They rely on solar energy to warm their flight muscles.

The best way to attract them is to provide a water source, such as a small garden pond with plenty of aquatic vegetation. They prefer sunny spots with 'perching' plants like rushes or tall grasses near the water.

They are beneficial predators that eat a wide variety of small insects, including mosquitoes, gnats, and flies. They catch their prey mid-air or pluck them from the surface of leaves.

Yes, they are one of the most common damselflies in suburban environments because they are highly tolerant of different water qualities and can thrive in man-made ponds and drainage areas.

Look at the tail (abdomen). The Familiar Bluet has a very bright sky-blue color with small black rings, and segments 8 and 9 near the tip are almost entirely blue. They also tend to be found in more open, sunny areas than other bluet species.

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