libellák

Libellák, commonly known as dragonflies, are an order of insects belonging to the infraorder Odonata. They are characterized by their large, multifaceted eyes, two pairs of strong, transparent wings, and elongated bodies. Dragonflies are ancient creatures, with fossil evidence dating back over 300 million years. They are aerial predators, feeding on other insects like mosquitoes and flies, which they often catch in flight. Their larvae, called nymphs, are aquatic and also predatory, living in freshwater environments for several months to years before metamorphosing into their adult form.

The wings of a dragonfly are unique, with a complex network of veins providing strength and maneuverability. They can fly in multiple directions, hover, and achieve high speeds. Their large eyes provide nearly 360-degree vision, aiding in hunting and predator avoidance. Dragonflies are found worldwide, except in the polar regions, inhabiting areas near freshwater sources. Their presence is often an indicator of a healthy aquatic ecosystem.

The life cycle involves an egg stage, a larval (nymph) stage, and an adult stage. The nymph stage is aquatic and can last from a few months to several years, depending on the species and environmental conditions. During this time, the nymph molts several times, growing larger with each molt. Once mature, the nymph climbs out of the water onto a plant stem or other surface, where it undergoes its final molt to emerge as a winged adult. The adult dragonfly's primary purpose is reproduction, and their lifespan as adults can range from a few weeks to several months.