Dragonflies, members of the order Odonata, are mesmerizing insects that play a valuable role in ecosystems by preying on smaller flying pests. Their shimmering wings and agile flight make them compelling subjects for temporary observation. Interacting with these creatures requires a gentle, deliberate approach to ensure their safety. This guide details humane methods for catching a dragonfly for a brief moment of study and guaranteeing its safe return to the wild.
Preparing for the Catch: Timing and Equipment
The correct equipment is necessary to protect a dragonfly’s delicate structure, especially its wings. The essential tool is a lightweight entomological net, featuring a fine mesh bag and a wide hoop, often measuring 15 to 18 inches in diameter. The fine mesh prevents the insect’s head or limbs from getting caught. The net bag should be long enough to fold over the rim easily once a capture is made, as nets with overly large mesh can damage the insect’s wings or head.
Optimal conditions for a successful catch occur near water sources, such as ponds, lakes, or slow-moving streams, where dragonflies breed and hunt. The best time for activity is late morning or midday, when the sun has warmed the air and the insects are most active. Attempting a capture when the air is too cool may result in a slower, less agile insect that is more susceptible to harm.
Gentle Capture Techniques
Dragonflies possess compound eyes that provide a nearly 360-degree field of view, making a direct approach challenging. To increase the likelihood of a successful capture, approach slowly and quietly, preferably from behind or slightly to the side, where their vision is weakest. While it is easier to net a dragonfly perched on vegetation, capturing one in flight requires precision and speed.
The physical act of capture involves a swift, sweeping motion, moving the net faster than the dragonfly is flying to intercept its path. Once the insect is inside the net bag, immediately perform the “net fold” technique by twisting the net handle or quickly flipping the net bag over the rim. This action closes the entrance, forcing the dragonfly deep into the soft mesh. Keeping the insect deep within the bag minimizes stress and prevents it from thrashing its wings against the hard rim or handle.
Ensuring a Safe Release
Once secured, transfer the dragonfly out of the net with care for examination or observation. Gently grasp the insect through the net bag and carefully slide it out, holding all four wings where they meet the thorax, a technique known as the “total fold.” Hold the wings folded upward and parallel to the body, using firm but light pressure between your thumb and forefinger. Ensure the grip is as close to the body as possible.
Hold only the wings near the thorax and never the fragile abdomen, which contains vital organs and can be easily damaged. Minimize the amount of time the insect is handled to reduce stress and the chance of injury. Newly emerged dragonflies, known as tenerals, are especially fragile and should be left undisturbed, as their wings can be easily damaged.
To release the dragonfly, position it on a stable surface, such as a sturdy leaf, a reed, or the palm of your hand, in a warm, sunny location. Allow the insect to rest and fly away under its own power, rather than tossing it into the air. Observing it fly away ensures the wings are undamaged and the dragonfly is ready to resume its natural activities.